ARM: remove dead CodeGen functions.

These two are no longer being used by NEON codegen.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211586 91177308-0d34-0410-b5e6-96231b3b80d8
[OPENMP] Additional checking for 'collapse' clause.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211589 91177308-0d34-0410-b5e6-96231b3b80d8