More about code cleaning.

Remove useless includes and dead code

common/lset.cpp

@@ -27,7 +27,6 @@
 #include <cstdarg>
 
 #include <layers_id_colors_and_visibility.h>
-#include <class_board.h>
 
 
 LSET::LSET( const PCB_LAYER_ID* aArray, unsigned aCount ) :

gerbview/gerber_draw_item.h

@@ -287,28 +287,6 @@ public:
         return wxT( "GERBER_DRAW_ITEM" );
     }
 
-    /**
-     * Function UnLink
-     * detaches this object from its owner.
-     */
-    void UnLink()
-    {
-        DLIST<GERBER_DRAW_ITEM>* list = (DLIST<GERBER_DRAW_ITEM>*) GetList();
-        wxASSERT( list );
-
-        if( list )
-            list->Remove( this );
-    }
-
-    /**
-     * Function DeleteStructure
-     * deletes this object after UnLink()ing it from its owner.
-     */
-    void DeleteStructure()
-    {
-        UnLink();
-        delete this;
-    }
 #if defined(DEBUG)
     void Show( int nestLevel, std::ostream& os ) const override;
 #endif