How to Hide Gallery - Video Gallery Admin Menus

function plt_hide_gallery_video_menus() {
	//Hide "Video Gallery".
	remove_menu_page('video_galleries_huge_it_video_gallery');
	//Hide "Video Gallery → Video Galleries".
	remove_submenu_page('video_galleries_huge_it_video_gallery', 'video_galleries_huge_it_video_gallery');
	//Hide "Video Gallery → Advanced Features PRO".
	remove_submenu_page('video_galleries_huge_it_video_gallery', 'Options_video_gallery_styles');
	//Hide "Video Gallery → Lightbox Options".
	remove_submenu_page('video_galleries_huge_it_video_gallery', 'Options_video_gallery_lightbox_styles');
	//Hide "Video Gallery → Featured Plugins".
	remove_submenu_page('video_galleries_huge_it_video_gallery', 'huge_it_video_gallery_featured_plugins');
	//Hide "Video Gallery → Licensing".
	remove_submenu_page('video_galleries_huge_it_video_gallery', 'huge_it_video_gallery_licensing');
}

add_action('admin_menu', 'plt_hide_gallery_video_menus', 11);
Where do I put this code?