Removes a widget from the action area of info_bar.
The widget must have been put there by a call to gtk.info_bar.InfoBar.addActionWidget or gtk.info_bar.InfoBar.addButton.
an action widget to remove
Removes a widget from the action area of info_bar.
The widget must have been put there by a call to gtk.info_bar.InfoBar.addActionWidget or gtk.info_bar.InfoBar.addButton.