[flang-commits] [flang] [flang] Remove obsolete flang-to-external-fc tool (PR #88904)

[Andrzej Warzyński via flang-commits]

https://github.com/banach-space approved this pull request.

LGTM, thanks!

@sscalpone - any objections?

https://github.com/llvm/llvm-project/pull/88904