pcbnew: Fix multiple delete bug

Delete events when using GAL are handled by only one tool handler
instead of ROUTER_TOOL and EDIT_TOOL both deleting items.

Fixes: lp:1715158
* https://bugs.launchpad.net/kicad/+bug/1715158

pcbnew/router/router_tool.cpp

@@ -914,16 +914,6 @@ int ROUTER_TOOL::mainLoop( PNS::ROUTER_MODE aMode )
         {
             m_toolMgr->RunAction( PCB_ACTIONS::layerToggle, true );
         }
-        else if( evt->IsAction( &PCB_ACTIONS::remove ) )
-        {
-            updateStartItem( *evt );
-            deleteTraces( m_startItem, false );
-        }
-        else if( evt->IsAction( &PCB_ACTIONS::removeAlt ) )
-        {
-            updateStartItem( *evt );
-            deleteTraces( m_startItem, true );
-        }
     }
 
     frame->SetNoToolSelected();