Revert "Updated test cases for contextual conversion"

This reverts commit r184100.

It was faling on some bots:
http://bb.pgr.jp/builders/cmake-clang-i686-mingw32/builds/1973/steps/test_clang/logs/Clang%20%3A%3A%20SemaCXX__cxx1y-contextual-conversion-tweaks.cpp

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184108 91177308-0d34-0410-b5e6-96231b3b80d8
X86 intrinsics: cmpge|gt|nge|ngt_ss|_sd

These intrinsics should return the comparision result in the low bits and keep 
the high bits of the first source operand.

When calling to builtin functions, the source operands are swapped and the high
bits of the second source operand are kept. To fix the issue, an extra
shufflevector is used.

rdar://14153896


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184110 91177308-0d34-0410-b5e6-96231b3b80d8