[llvm] [AMDGPU] Remove wavefrontsize feature from GFX10+ (PR #98400)

[Stanislav Mekhanoshin via llvm-commits]

rampitec wrote:

I did not remove all these `-mattr=-wavefrontsize32,+wavefrontsize64` in many tests, this can be done separately. Just fixed some of them to test this change.

https://github.com/llvm/llvm-project/pull/98400