code: function deleteUnsavedSetting( settings, settingName ) {
  	unset( settings, settingName );
  	const settingKeys = settingName.split( '.' );
  	if ( settingKeys.length > 1 ) {
  		settingKeys.pop();
  		const parentKey = settingKeys.join( '.' );
  		// if parent is empty, call function again
  		if ( parentKey && isEmpty( get( settings, parentKey ) ) ) {
  			deleteUnsavedSetting( settings, parentKey );
  		}
  	}
  }
docs: /*
  Deletes a provided unsaved setting, then calls itself recursively
  to delete any empty parents of the setting passed to it