[llvm] Revert "[Utils][SPIR-V] Adding spirv-sim to LLVM" (PR #107084)

[Nathan Gauër via llvm-commits]

Keenuts wrote:

Link to the bot failures: https://lab.llvm.org/buildbot/#/builders/12/builds/4993
Reverting for now.

https://github.com/llvm/llvm-project/pull/107084