How to Hide Video Embed Admin Menus

function plt_hide_video_embed_box_menus() {
	//Hide "Video Embed".
	remove_menu_page('video-embed');
	//Hide "Video Embed → Video Embed".
	remove_submenu_page('video-embed', 'video-embed');
	//Hide "Video Embed → New".
	remove_submenu_page('video-embed', 'new-video-embed');
	//Hide "Video Embed → Options".
	remove_submenu_page('video-embed', 'video-embed-options');
}

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

Where do I put this code?