Remove support for ObjCMethodDecl attributes that appear between the

Remove support for ObjCMethodDecl attributes that appear between the
return type and the selector.  This is inconsistent with C functions
(where such attributes would be placed on the return type, not the the
FunctionDecl), and is inconsistent with what people are use to seeing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70878 91177308-0d34-0410-b5e6-96231b3b80d8