Get rid of unused functions kit(TextAffinity) and core(TextAffinity) in TextAffinity.h

Source/core/editing/TextAffinity.h

Index: Source/core/editing/TextAffinity.h
diff --git a/Source/core/editing/TextAffinity.h b/Source/core/editing/TextAffinity.h
index 05ba0adad3ffb5f78e69a2a866d253e4526ace69..80a8ad22611250d3698a79411de814c8ad47ad81 100644
--- a/Source/core/editing/TextAffinity.h
+++ b/Source/core/editing/TextAffinity.h
@@ -26,32 +26,10 @@
 #ifndef TextAffinity_h
 #define TextAffinity_h
 
-#ifdef __OBJC__
-#include <AppKit/NSTextView.h>
-#endif
-
 namespace blink {
 
-// These match the AppKit values for these concepts.
-// From NSTextView.h:
-// NSSelectionAffinityUpstream = 0
-// NSSelectionAffinityDownstream = 1
-enum class TextAffinity { Upstream = 0, Downstream = 1 };
+enum class TextAffinity { Upstream, Downstream };
 
 } // namespace blink
 
-#ifdef __OBJC__
-
-inline NSSelectionAffinity kit(blink::TextAffinity affinity)
-{
-    return static_cast<NSSelectionAffinity>(affinity);
-}
-
-inline blink::TextAffinity core(NSSelectionAffinity affinity)
-{
-    return static_cast<blink::TextAffinity>(affinity);
-}
-
-#endif
-
 #endif // TextAffinity_h