Fixed: Duplicate method in CPArrayController.j

Method alwaysUsesMultipleValuesMarker is duplicated in class CPArrayController.j. Both methods have the same body and same selector, the only difference being their comments are slightly different. Both comments however communicate the same thing.

AppKit/CPArrayController.j

@@ -219,17 +219,6 @@
     _clearsFilterPredicateOnInsertion = aFlag;
 }
 
-/*!
-    Whether the receiver will always return the multiple values marker when multiple
-    items are selected, even if the items have the same value.
-
-    @return BOOL YES if the receiver always uses the multiple values marker
-*/
-- (BOOL)alwaysUsesMultipleValuesMarker
-{
-    return _alwaysUsesMultipleValuesMarker;
-}
-
 /*!
     Sets whether the receiver should always return the multiple values marker when multiple
     items are selected, even if the items have the same value.