How to Hide Easy Support Videos Admin Menus

function plt_hide_easy_support_videos_menus() {
	//Hide the "Support Videos" menu.
	remove_menu_page('easy-support-videos');
	//Hide the "Support Videos → Support Videos" menu.
	remove_submenu_page('easy-support-videos', 'easy-support-videos');
	//Hide the "Support Videos → Options" menu.
	remove_submenu_page('easy-support-videos', 'easy-support-videos-options');
}

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

Where do I put this code?