[llvm] AMDGPU: Drop amdgpu-no-lds-kernel-id attribute in LDS lowering (PR #71481)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> See comment below. Also, can we add a statistics counter or remark, I want a way to quantify how often this hits to decide if we should improve this.

It's basically never. LDS used outside of kernels is barely used, and then it needs to be in something that won't be inlined anyway 

https://github.com/llvm/llvm-project/pull/71481