How to Hide the "Insta Feed - WPOS" Admin Menu

function plt_hide_slider_and_carousel_plus_widget_for_instagram_menus() {
	//Hide the "Insta Feed - WPOS" menu.
	remove_menu_page('instagram-slider-and-carousel-plus-widget');
}

add_action('admin_menu', 'plt_hide_slider_and_carousel_plus_widget_for_instagram_menus', 1000);

Where do I put this code?