AMDGPU: Remove llvm.SI.load.const

It's taken 3 years, but now all of the old AMDGPU and SI intrinsics
are finally gone

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351586 91177308-0d34-0410-b5e6-96231b3b80d8
10 files changed