[CMake] Fix up QuartzCore dependencies on macOS. (#4945)

CoreImage used to be part of QuartzCore on macOS, so QuartzCore
automatically re-exports it.

Author: jrose-apple

stdlib/public/SDK/CoreImage/CMakeLists.txt

@@ -4,7 +4,7 @@ add_swift_library(swiftCoreImage ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"
   LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"
   TARGET_SDKS OSX IOS IOS_SIMULATOR TVOS TVOS_SIMULATOR
-  SWIFT_MODULE_DEPENDS Foundation ObjectiveC QuartzCore
+  SWIFT_MODULE_DEPENDS Foundation ObjectiveC
   SWIFT_MODULE_DEPENDS_IOS CoreMedia
   SWIFT_MODULE_DEPENDS_TVOS CoreMedia
   FRAMEWORK_DEPENDS_OSX QuartzCore

stdlib/public/SDK/CoreImage/CoreImage.swift

@@ -13,10 +13,6 @@
 import Foundation
 @_exported import CoreImage  // Clang module
 
-#if os(OSX)
-import QuartzCore
-#endif
-
 extension CIFilter {
 #if os(OSX)
   // - (CIImage *)apply:(CIKernel *)k, ...

stdlib/public/SDK/QuartzCore/CMakeLists.txt

@@ -4,6 +4,7 @@ add_swift_library(swiftQuartzCore ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SD
   LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"
   TARGET_SDKS OSX IOS IOS_SIMULATOR TVOS TVOS_SIMULATOR
   SWIFT_MODULE_DEPENDS ObjectiveC Foundation CoreGraphics
+  SWIFT_MODULE_DEPENDS_OSX CoreImage
   FRAMEWORK_DEPENDS QuartzCore)