Remove Tags.h, Grid.h from headers

src/LabelDialog.h

@@ -15,11 +15,14 @@
 #include <wx/defs.h>
 
 #include "Internat.h"
-#include "widgets/Grid.h"
 #include "widgets/wxPanelWrapper.h"
+#include "audacity/ComponentInterface.h" // member variable
 
 class wxArrayString;
 class wxGridEvent;
+class ChoiceEditor;
+class Grid;
+class NumericEditor;
 class TrackFactory;
 class TrackList;
 class RowData;