Revert r321697 "[libclang] Support querying whether a declaration is invalid" and follow-ups.

This broke test/Index/opencl-types.cl on several buildbots:
http://lab.llvm.org:8011/builders/clang-cmake-aarch64-lld/builds/3294
http://lab.llvm.org:8011/builders/clang-ppc64be-linux-multistage/builds/6498
http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/5239

> [libclang] Support querying whether a declaration is invalid
>
> This is useful for e.g. highlighting purposes in an IDE.
>
> Patch by Nikolai Kosjar.
>
> Differential Revision: https://reviews.llvm.org/D40072

Also reverting follow-ups that otherwise caused conflicts for the
revert:

r321700 "Fix line endings."
r321701 "Fix more line endings."

r321698 "[libclang] Fix cursors for functions with trailing return type"
> For the function declaration
>
> auto foo5(Foo) -> Foo;
> the parameter tokens were mapped to cursors representing the
> FunctionDecl:
>
> Keyword: "auto" [1:1 - 1:5] FunctionDecl=test5:1:6
> Identifier: "test5" [1:6 - 1:11] FunctionDecl=test5:1:6
> Punctuation: "(" [1:11 - 1:12] FunctionDecl=test5:1:6
> Identifier: "X" [1:12 - 1:13] FunctionDecl=test5:1:6 // Ops, not a TypeRef
> Punctuation: ")" [1:13 - 1:14] FunctionDecl=test5:1:6
> Punctuation: "->" [1:15 - 1:17] FunctionDecl=test5:1:6
> Identifier: "X" [1:18 - 1:19] TypeRef=struct X:7:8
> Punctuation: ";" [1:19 - 1:20]
>
> Fix this by ensuring that the trailing return type is not visited as
> first.
>
> Patch by Nikolai Kosjar.
>
> Differential Revision: https://reviews.llvm.org/D40561

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@321708 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 2 deletions

diff --git a/tools/c-index-test/c-index-test.c b/tools/c-index-test/c-index-test.c
index c5e345ef6a..99f05669b6 100644
--- a/tools/c-index-test/c-index-test.c
+++ b/tools/c-index-test/c-index-test.c
@@ -812,8 +812,6 @@ static void PrintCursor(CXCursor Cursor, const char *CommentSchemaFile) {
       printf(" (variadic)");
     if (clang_Cursor_isObjCOptional(Cursor))
       printf(" (@optional)");
-    if (clang_isInvalidDeclaration(Cursor))
-      printf(" (invalid)");
 
     switch (clang_getCursorExceptionSpecificationType(Cursor))
     {