[llvm] [RISCV] Remove skipFunction from RISCVVMV0Elimination. (PR #136080)

[Craig Topper via llvm-commits]

topperc wrote:

> Do we need an isRequired function for the NPM too? It doesn't look like this is a NPM Pass yet, but that is coming for backend passes.

I think we probably do. Is that something I can add now or do we need to port to NPM first?

https://github.com/llvm/llvm-project/pull/136080