Don't use QSettings to "cache" plugin information

The main rationale of the cache was to examine the plugin's build-key
before loading it. Now that the build-key has been removed, the cache
has lost its usefulness.

This is part of a larger push to not use QSettings for Qt specific
settings or caches.

See also:
http://lists.qt.nokia.com/pipermail/qt5-feedback/2011-August/000892.html
http://lists.qt.nokia.com/pipermail/qt5-feedback/2011-August/000960.html
http://lists.qt.nokia.com/pipermail/qt5-feedback/2011-August/000907.html
http://lists.qt.nokia.com/pipermail/qt5-feedback/2011-August/000904.html

Change-Id: I96e84aa25983c8e06e027ff70cef109444c362a2
Reviewed-on: http://codereview.qt.nokia.com/3978
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
index 2458f9649e..6d8bf20b7c 100644
--- a/src/corelib/kernel/qcoreapplication.cpp
+++ b/src/corelib/kernel/qcoreapplication.cpp
@@ -266,18 +266,6 @@ bool QCoreApplicationPrivate::is_app_closing = false;
 // initialized in qcoreapplication and in qtextstream autotest when setlocale is called.
 Q_CORE_EXPORT bool qt_locale_initialized = false;
 
-
-/*
-  Create an instance of Trolltech.conf. This ensures that the settings will not
-  be thrown out of QSetting's cache for unused settings.
-  */
-Q_GLOBAL_STATIC_WITH_ARGS(QSettings, staticTrolltechConf, (QSettings::UserScope, QLatin1String("Trolltech")))
-
-QSettings *QCoreApplicationPrivate::trolltechConf()
-{
-    return staticTrolltechConf();
-}
-
 Q_CORE_EXPORT uint qGlobalPostedEventsCount()
 {
     QThreadData *currentThreadData = QThreadData::current();