How to Hide Social Slider Feed Admin Menus

function plt_hide_instagram_slider_widget_menus() {
	//Hide "How to get Youtube API key".
	remove_menu_page('manual-wisw');

	//Hide "Social Slider Feeds".
	remove_menu_page('feeds-wisw');
	//Hide "Social Slider Feeds → Feeds".
	remove_submenu_page('feeds-wisw', 'feeds-wisw');
	//Hide "Social Slider Feeds → Profiles".
	remove_submenu_page('feeds-wisw', 'settings-wisw');
	//Hide "Social Slider Feeds → License".
	remove_submenu_page('feeds-wisw', 'license-wisw');
	//Hide "Social Slider Feeds → Logs".
	remove_submenu_page('feeds-wisw', 'wis_logger-wisw');
	//Hide "Social Slider Feeds → About".
	remove_submenu_page('feeds-wisw', 'about-wisw');
}

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

Where do I put this code?