QtSQL: remove SQLite2 and TDS driver for Qt6

They were deprecated in Qt4 (TDS) and 5.14 (SQLITE2) so they can be
removed now in Qt6

[ChangeLog][QtSql] Removed obsolete TDS and Sqlite2 drivers

Change-Id: I55118fb03106564d519a99ab55f9b5cf528179f3
Reviewed-by: Andy Shaw <andy.shaw@qt.io>

4 files changed, 2 insertions, 151 deletions

diff --git a/src/sql/doc/snippets/code/doc_src_sql-driver.qdoc b/src/sql/doc/snippets/code/doc_src_sql-driver.qdoc
index b869b309b7..c7cc06bca5 100644
--- a/src/sql/doc/snippets/code/doc_src_sql-driver.qdoc
+++ b/src/sql/doc/snippets/code/doc_src_sql-driver.qdoc
@@ -54,7 +54,7 @@
 Database options:
 
   -sql-<driver> ........ Enable SQL <driver> plugin. Supported drivers:
-                         db2 ibase mysql oci odbc psql sqlite2 sqlite tds
+                         db2 ibase mysql oci odbc psql sqlite
                          [all auto]
   -sqlite .............. Select used sqlite3 [system/qt]
 
@@ -146,21 +146,6 @@ nmake install
 //! [15]
 
 
-//! [16]
-cd $QTDIR/qtbase/src/plugins/sqldrivers
-qmake -- TDS_PREFIX=$SYBASE
-make sub-tds
-//! [16]
-
-
-//! [17]
-cd %QTDIR%\qtbase\src\plugins\sqldrivers
-qmake
-nmake sub-tds
-nmake install
-//! [17]
-
-
 //! [18]
 cd $QTDIR/qtbase/src/plugins/sqldrivers
 qmake -- DB2_PREFIX=$DB2DIR
@@ -271,8 +256,6 @@ Checking for MySQL... yes
 Checking for OCI (Oracle)... no
 Checking for ODBC... yes
 Checking for PostgreSQL... no
-Checking for SQLite (version 2)... no
-Checking for TDS (Sybase)... no
 Done running configuration tests.
 
 Configure summary:
@@ -284,10 +267,8 @@ Qt Sql Drivers:
   OCI (Oracle) ........................... no
   ODBC ................................... yes
   PostgreSQL ............................. no
-  SQLite2 ................................ no
   SQLite ................................. yes
     Using system provided SQLite ......... no
-  TDS (Sybase) ........................... no
 
 Qt is now configured for building. Just run 'mingw32-make'.
 Once everything is built, you must run 'mingw32-make install'.
diff --git a/src/sql/doc/src/qsqldatatype-table.qdoc b/src/sql/doc/src/qsqldatatype-table.qdoc
index aafbed6096..1c5ab741c9 100644
--- a/src/sql/doc/src/qsqldatatype-table.qdoc
+++ b/src/sql/doc/src/qsqldatatype-table.qdoc
@@ -502,67 +502,4 @@
         \li The value is a BLOB of data, stored exactly as it was input.
         \li Mapped to QByteArray
   \endtable
-
-  \section2 Sybase Adaptive Server Data Types
-
-  \table 90%
-    \header
-        \li Sybase Adaptive Server data type
-        \li SQL type description
-        \li Recommended input (C++ or Qt data type)
-    \row
-        \li BINARY
-        \li Describes a fixed-length binary value up to 255 bytes in size.
-        \li Mapped to QByteArray
-    \row
-        \li CHAR
-        \li Character String
-        \li Mapped to QString
-    \row
-        \li DATETIME
-        \li Date and time. Range: 1753-01-01 00:00:00 through 9999-12-31 23:59:59.
-        \li Mapped to QDateTime
-    \row
-        \li NCHAR
-        \li Character String of fixed length
-        \li Mapped to QString
-    \row
-        \li NVARACHAR
-        \li Character String of variable length
-        \li Mapped to QString
-    \row
-        \li VARCHAR
-        \li Character String of fixed length
-        \li Mapped to QString
-    \row
-        \li CLOB
-        \li Character large string object
-        \li Mapped to QString
-    \row
-        \li TIMESTAMP
-        \li A unique number within a database
-        \li Mapped to QString
-    \row
-        \li SMALLDATETIME
-        \li Date and time. Range: 1900-01-01 00:00 through 2079-12-31 23:59
-        \li Mapped to QDateTime
-    \row
-        \li UNICHAR
-        \li Character String of fixed length.(Unicode)
-        \li Mapped to QString
-    \row
-        \li UNIVARCHAR
-        \li Character String of variable length.(Unicode)
-        \li Mapped to QString
-    \row
-        \li VARBINARY
-        \li Describes a variable-length binary value up to 255 bytes in size
-        \li Mapped to QByteArray
-  \endtable
-
-  \section2 SQLite Version 2
-
-  SQLite version 2 is "typeless". This means that you can store any kind of
-  data you want in any column of any table, regardless of the declared
-  data type of that column. We recommend that you map the data to QString.
 */
diff --git a/src/sql/doc/src/sql-driver.qdoc b/src/sql/doc/src/sql-driver.qdoc
index 4d6df63749..28841a58de 100644
--- a/src/sql/doc/src/sql-driver.qdoc
+++ b/src/sql/doc/src/sql-driver.qdoc
@@ -54,9 +54,7 @@
          \li Open Database Connectivity (ODBC) - Microsoft SQL Server and other
             ODBC-compliant databases
     \row \li \l{#QPSQL}{QPSQL} \li PostgreSQL (versions 7.3 and above)
-    \row \li \l{#QSQLITE2}{QSQLITE2} \li SQLite version 2 \note obsolete since Qt 5.14
     \row \li \l{#QSQLITE}{QSQLITE} \li SQLite version 3
-    \row \li \l{#QTDS}{QTDS} \li Sybase Adaptive Server \note obsolete since Qt 4.7
     \endtable
 
     SQLite is the in-process database system with the best test coverage
@@ -500,49 +498,6 @@
     in your installation package. It must be placed in the same folder
     as the application executable.
 
-    \target QTDS
-    \section2 QTDS for Sybase Adaptive Server
-
-    \note TDS is no longer used by MS Sql Server, and is superseded by
-    \l{QODBC}{ODBC}. QTDS is obsolete from Qt 4.7.
-
-    It is not possible to set the port with QSqlDatabase::setPort() due to limitations in the
-    Sybase client library. Refer to the Sybase documentation for information on how to set up
-    a Sybase client configuration file to enable connections to databases on non-default ports.
-
-    \section3 How to Build the QTDS Plugin on Unix and \macos
-
-    Under Unix, two libraries are available which support the TDS protocol:
-
-    \list
-    \li FreeTDS, a free implementation of the TDS protocol
-      (\l{http://www.freetds.org}).
-
-    \li Sybase Open Client, available from \l{https://support.sap.com}.
-    \endlist
-
-    Regardless of which library you use, the shared object file
-    \c{libsybdb.so} is needed. Set the \c SYBASE environment variable to
-    point to the directory where you installed the client library and
-    execute \c{qmake}:
-
-    \snippet code/doc_src_sql-driver.qdoc 16
-
-    \section3 How to Build the QDTS Plugin on Windows
-
-    You can either use the DB-Library supplied by Microsoft or the Sybase
-    Open Client (\l{https://support.sap.com}). Configure will try to find
-    NTWDBLIB.LIB to build the plugin:
-
-    \snippet code/doc_src_sql-driver.qdoc 17
-
-    By default, the Microsoft library is used on Windows. If you want to
-    force the use of the Sybase Open Client, you must define \c
-    Q_USE_SYBASE in \c{%QTDIR%\qtbase\src\plugins\sqldrivers\tds\qsql_tds.cpp}.
-
-    If you are not using a Microsoft compiler, replace \c nmake
-    with \c mingw32-make in the line above.
-
     \target QDB2
     \section2 QDB2 for IBM DB2 (Version 7.1 and Above)
 
@@ -571,13 +526,6 @@
     If you are not using a Microsoft compiler, replace \c nmake
     with \c mingw32-make in the line above.
 
-    \target QSQLITE2
-    \section2 QSQLITE2 for SQLite Version 2
-
-    The Qt SQLite 2 plugin is offered for compatibility. Whenever
-    possible, use the \l{#QSQLITE}{version 3 plugin} instead. The
-    build instructions for version 3 apply to version 2 as well.
-
     \target QSQLITE
     \section2 QSQLITE for SQLite (Version 3 and Above)
 
diff --git a/src/sql/kernel/qsqldatabase.cpp b/src/sql/kernel/qsqldatabase.cpp
index 32338c1fe2..094943ca31 100644
--- a/src/sql/kernel/qsqldatabase.cpp
+++ b/src/sql/kernel/qsqldatabase.cpp
@@ -619,8 +619,6 @@ QStringList QSqlDatabase::connectionNames()
     \row \li QODBC    \li ODBC Driver (includes Microsoft SQL Server)
     \row \li QPSQL    \li PostgreSQL Driver
     \row \li QSQLITE  \li SQLite version 3 or above
-    \row \li QSQLITE2 \li SQLite version 2
-    \row \li QTDS     \li Sybase Adaptive Server
     \endtable
 
     Additional third party drivers, including your own custom
@@ -1185,7 +1183,7 @@ QSqlRecord QSqlDatabase::record(const QString& tablename) const
     \li service
     \endlist
 
-    \header \li DB2 \li OCI \li TDS
+    \header \li DB2 \li OCI
     \row
 
     \li
@@ -1200,9 +1198,6 @@ QSqlRecord QSqlDatabase::record(const QString& tablename) const
     \li OCI_ATTR_PREFETCH_MEMORY
     \endlist
 
-    \li
-    \e none
-
     \header \li SQLite \li Interbase
     \row
 
@@ -1327,11 +1322,6 @@ bool QSqlDatabase::isDriverAvailable(const QString& name)
     \li SQLHANDLE environment, SQLHANDLE connection
     \li \c qsql_db2.cpp
     \row
-    \li QTDS
-    \li QTDSDriver
-    \li LOGINREC *loginRecord, DBPROCESS *dbProcess, const QString &hostName
-    \li \c qsql_tds.cpp
-    \row
     \li QSQLITE
     \li QSQLiteDriver
     \li sqlite *connection
@@ -1343,11 +1333,6 @@ bool QSqlDatabase::isDriverAvailable(const QString& name)
     \li \c qsql_ibase.cpp
     \endtable
 
-    The host name (or service name) is needed when constructing the
-    QTDSDriver for creating new connections for internal queries. This
-    is to prevent blocking when several QSqlQuery objects are used
-    simultaneously.
-
     \warning Adding a database connection with the same connection
     name as an existing connection, causes the existing connection to
     be replaced by the new one.