Use base implementation of dragAcceptFiles in wxOSX

As is done in wxGTK implementation.

Closes https://github.com/wxWidgets/wxWidgets/pull/1116

include/wx/osx/window.h

@@ -125,8 +125,6 @@ public:
 #if wxUSE_DRAG_AND_DROP
     virtual void SetDropTarget( wxDropTarget *dropTarget ) wxOVERRIDE;
 
-    // Accept files for dragging
-    virtual void DragAcceptFiles( bool accept ) wxOVERRIDE;
 #endif
 
     // implementation from now on

src/osx/window_osx.cpp

@@ -621,11 +621,6 @@ void wxWindowMac::SetDropTarget(wxDropTarget *pDropTarget)
     GetPeer()->SetDropTarget(m_dropTarget) ;
 }
 
-// Old-style File Manager Drag & Drop
-void wxWindowMac::DragAcceptFiles(bool WXUNUSED(accept))
-{
-    // TODO:
-}
 #endif
 
 // From a wx position / size calculate the appropriate size of the native control