How to Hide All-in-One Addons for Elementor - WidgetKit Admin Menus

function plt_hide_widgetkit_for_elementor_menus() {
	//Hide the "WidgetKit" menu.
	remove_menu_page('widgetkit-settings');
	//Hide the "WidgetKit → WidgetKit" menu.
	remove_submenu_page('widgetkit-settings', 'widgetkit-settings');
	//Hide the "WidgetKit → Go Pro" menu.
	remove_submenu_page('widgetkit-settings', 'widgetkit-gopro');
}

add_action('admin_menu', 'plt_hide_widgetkit_for_elementor_menus', 11);

Where do I put this code?