Merge pull request #18448 from apple/revert-18399-disable-test

Revert "tests: disabled a clang importer test"

Author: jrose-apple

test/ClangImporter/CoreGraphics_test.swift

@@ -1,7 +1,5 @@
 // RUN: %target-swift-frontend -module-name=cgtest -emit-ir -O %s | %FileCheck %s
 
-// REQUIRES: rdar42775178
-
 // Test some imported CG APIs
 import CoreGraphics