Cleanup: test source file does not need to be executable

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180002 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/microsoft-abi-member-pointers.cpp b/test/CodeGenCXX/microsoft-abi-member-pointers.cpp
old mode 100755
new mode 100644