[clang] [clang][Darwin] Remove legacy framework search path logic in the frontend (PR #75841)

[Arthur Eubanks via cfe-commits]

aeubanks wrote:

I've reverted this, hopefully the command line in the failing invocation I gave is enough to repro the regression, otherwise lmk what else I can do to help repro

https://github.com/llvm/llvm-project/pull/75841