[llvm] [AMDGPU][True16][MC] remove duplicated test line in VOP2 test (PR #117195)

[Brox Chen via llvm-commits]

broxigarchen wrote:

There is a problem with the preivous patch https://github.com/llvm/llvm-project/pull/116860 and I am planning and revert and redo it.

The is the only patch follows 116860. This will also be reverted here https://github.com/llvm/llvm-project/pull/119247 and redo later

https://github.com/llvm/llvm-project/pull/117195