How to Hide the "Trending Post" Admin Menu

function plt_hide_wp_trending_post_slider_and_widget_menus() {
	//Hide the "Trending Post" menu.
	remove_menu_page('wp-trending-post-slider-and-widget');
}

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

Where do I put this code?