docs: def removeQuery( self ):
          """
          Removes the currently selected query.
          """
          items = self.uiQueryTREE.selectedItems()
          tree  = self.uiQueryTREE
          for item in items:
              parent = item.parent()
              if ( parent ):
                  parent.takeChild(parent.indexOfChild(item))
              else:
                  tree.takeTopLevelItem(tree.indexOfTopLevelItem(item))
          
          self.setQuery(self.query())