[llvm] [APInt] Remove multiplicativeInverse with explicit modulus (PR #87644)

[Jeremy Kun via llvm-commits]

j2kun wrote:

Note, this will also have valid uses in MLIR as part of a new polynomial dialect (cf. https://github.com/llvm/llvm-project/pull/72081, subsequent PRs will have lowerings that need this inverse calculation)

https://github.com/llvm/llvm-project/pull/87644