[llvm] [SLP]Remove operands upon marking instruction for deletion. (PR #97409)

[Alan Zhao via llvm-commits]

alanzhao1 wrote:

> Must be fixed in [af21bc1](https://github.com/llvm/llvm-project/commit/af21bc19172410f29606cac82a96c33d6710fe38)

Confirmed. Thanks for the extremely quick fix!

https://github.com/llvm/llvm-project/pull/97409