[flang] [clang] [flang][driver] Remove Fortain_main static library from linking stages (PR #75816)

[Andrzej Warzyński via cfe-commits]

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

Make sense, thank you! I really appreciate you fixing this 🙏🏻 

@kiranchandramohan - could you also take a look?

https://github.com/llvm/llvm-project/pull/75816