How to Hide Easy Leaflet Map Admin Menus

function plt_hide_easy_map_menus() {
	//Hide "Easy Map".
	remove_menu_page('easy-map');
	//Hide "Easy Map → Manage Map".
	remove_submenu_page('easy-map', 'easy-map');
	//Hide "Easy Map → Add Map".
	remove_submenu_page('easy-map', 'easy-map-add');
	//Hide "Easy Map → Manage Location".
	remove_submenu_page('easy-map', 'easy-map-location');
	//Hide "Easy Map → Add Location".
	remove_submenu_page('easy-map', 'easy-map-add-location');
	//Hide "Easy Map → Manage Drawing".
	remove_submenu_page('easy-map', 'easy-map-draw');
	//Hide "Easy Map → Add Drawing".
	remove_submenu_page('easy-map', 'easy-map-add-draw');
	//Hide "Easy Map → Settings".
	remove_submenu_page('easy-map', 'easy-map-settings');
	//Hide "Easy Map → Shortcode Sample".
	remove_submenu_page('easy-map', 'easy-map-shortcode');
}

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

Where do I put this code?