Remove layer title from dock for now

Sets the dock tab title which means it looks crappy
when stacked.

Author: NathanW2

src/app/qgisapp.cpp

@@ -9917,8 +9917,6 @@ void QgisApp::activateDeactivateLayerRelatedActions( QgsMapLayer* layer )
 
   if ( !layer )
   {
-    mLayerTreeDock->setWindowTitle( tr( "Layers Panel" ) );
-
     mActionSelectFeatures->setEnabled( false );
     mActionSelectPolygon->setEnabled( false );
     mActionSelectFreehand->setEnabled( false );
@@ -9992,8 +9990,6 @@ void QgisApp::activateDeactivateLayerRelatedActions( QgsMapLayer* layer )
     return;
   }
 
-  mLayerTreeDock->setWindowTitle( tr( "Layers Panel - %1" ).arg( layer->name() ) );
-
   mActionLayerProperties->setEnabled( QgsProject::instance()->layerIsEmbedded( layer->id() ).isEmpty() );
   mActionAddToOverview->setEnabled( true );
   mActionZoomToLayer->setEnabled( true );