[llvm] [offload] Remove bogus offload-tblgen check for standalone build (PR #119004)

[Sam James via llvm-commits]

https://github.com/thesamesam approved this pull request.

LGTM. Normally I'd say to wait to find out the intent but it's definitely wrong as-is and there's no harm that can come from fixing the standalone case now with this.



https://github.com/llvm/llvm-project/pull/119004