How to Hide Easy Social Feed Admin Menus

function plt_hide_easy_facebook_likebox_menus() {
	//Hide "Easy Social Feed".
	remove_menu_page('feed-them-all');
	//Hide "Easy Social Feed → Easy Social Feed".
	remove_submenu_page('feed-them-all', 'feed-them-all');
	//Hide "Easy Social Feed → Facebook".
	remove_submenu_page('feed-them-all', 'easy-facebook-likebox');
	//Hide "Easy Social Feed → Instagram".
	remove_submenu_page('feed-them-all', 'mif');
	//Hide "Easy Social Feed → Affiliation".
	remove_submenu_page('feed-them-all', 'feed-them-all-affiliation');
	//Hide "Easy Social Feed → Contact Us".
	remove_submenu_page('feed-them-all', 'feed-them-all-contact');
	//Hide "Easy Social Feed → Upgrade".
	remove_submenu_page('feed-them-all', 'feed-them-all-pricing');
}

add_action('admin_menu', 'plt_hide_easy_facebook_likebox_menus', 1000000000);

Where do I put this code?