swift

645628f3 - Frontend: Reinstate suppression of warnings during interface type-checking.

Frontend: Reinstate suppression of warnings during interface type-checking. We're not ready to start emitting warnings when type-checking modules from interface. It is causing performance regressions and spurious diagnostics to be emitted. Reverts a small part of https://github.com/swiftlang/swift/pull/80360. Resolves rdar://148257136.