Revert "AMDGPU: Set MCAsmInfo::PointerSize"

It breaks line tables because the patch is not complete, working on a complete one at the moment

This reverts commit r294031.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297118 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed