How to Hide Social Feed Gallery Admin Menus

function plt_hide_insta_gallery_menus() {
	//Hide "Social Feed Gallery".
	remove_menu_page('qligg');
	//Hide "Social Feed Gallery → Welcome".
	remove_submenu_page('qligg', 'qligg');
	//Hide "Social Feed Gallery → Accounts".
	remove_submenu_page('qligg', 'qligg_account');
	//Hide "Social Feed Gallery → Feeds".
	remove_submenu_page('qligg', 'qligg_feeds');
	//Hide "Social Feed Gallery → Setting".
	remove_submenu_page('qligg', 'qligg_setting');
	//Hide "Social Feed Gallery → Premium".
	remove_submenu_page('qligg', 'qligg_premium');
	//Hide "Social Feed Gallery → Suggestions".
	remove_submenu_page('qligg', 'qligg_suggestions');
}

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

Where do I put this code?