Merge pull request #23035 from jrose-apple/effed-up

[test] sil-opt doesn't support -Fsystem; use -F

Author: Catfish-Man

validation-test/SIL/verify_all_overlays.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 # RUN: ${python} %s %target-swiftmodule-name %platform-sdk-overlay-dir \
 # RUN:     %target-sil-opt -sdk %sdk -enable-sil-verify-all \
-# RUN:       -Fsystem %sdk/System/Library/PrivateFrameworks \
+# RUN:       -F %sdk/System/Library/PrivateFrameworks \
 # RUN:       -F "%xcode-extra-frameworks-dir"
 
 # REQUIRES: long_test