[llvm] [AMDGPU] Add MachineVerifer check to detect illegal copies from vector register to SGPR (PR #105494)

[Christudasan Devadasan via llvm-commits]

================
@@ -32,38 +32,6 @@ body:             |
     S_BRANCH %bb.2
 ...
 
----
-# GCN-LABEL: name: phi_moveimm_subreg_input
----------------
cdevadas wrote:

Yes, avoid this new test case. I recommend deleting this instance from the original test file.

https://github.com/llvm/llvm-project/pull/105494