[llvm] [llvm-ir2vec] Setting up ir2vec python bindings testing for ml-opt bots (PR #194593)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 commented:

The ml-opt bots do not run with LLVM_ENABLE_WERROR because we don't control the host toolchain too closely. We can just drop the warning flag changes.

https://github.com/llvm/llvm-project/pull/194593