Customizer: Deleting a Widget does not remove instance in options

[timmydcrawford]

When deleting a widget from widgets.php, for example a new Media Image Widget, the widget instance is removed from the widget_media_image site option, along with association/placement value in sidebars_widgets.

However, if a widget is removed using the customizer, the widget data ( again in this case testing with an image widget ), still exists in get_option( 'widget_media_image' ), while the entry in sidebars_widgets is again properly removed.

It seems removal of a widget in both places ( widgets.php and customizer ) should result in the removal from the associated option in both cases.

Confirmed the issue on trunk too.

Steps to re-create:

• Add a new image widget ( or any widget )
• Delete the widget via the customizer
• get_option('widget_media_image')