[clang] [clang][Darwin] Remove legacy framework search path logic in the frontend (PR #120149)

[Louis Dionne via cfe-commits]

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@@ -8265,6 +8265,11 @@ def internal_externc_isystem : Separate<["-"], "internal-externc-isystem">,
            "implicit extern \"C\" semantics; these are assumed to not be "
            "user-provided and are used to model system and standard headers' "
            "paths.">;
+def internal_iframework : Separate<["-"], "internal-iframework">,
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ldionne wrote:

(As a test to make sure I'm not crazy, I just committed https://github.com/llvm/llvm-project/pull/120149/commits/e624fd89124bc955aadb87dc87f2811f4531d7ec which removes `-internal-iframework` - I expect that won't work as intended)

https://github.com/llvm/llvm-project/pull/120149