remove_widget

This signal is meant to indicate that the cell is finished editing, and the cell_editable widget is being removed and may subsequently be destroyed.

Implementations of CellEditable are responsible for emitting this signal when they are done editing. It must be emitted after the editing_done signal, to give the cell renderer a chance to update the cell's value before the widget is removed.

remove_widget is a convenience method for emitting remove_widget.