How to Hide WP-Discourse Admin Menus

function plt_hide_wp_discourse_menus() {
	//Hide "Discourse".
	remove_menu_page('wp_discourse_options');
	//Hide "Discourse → All Options".
	remove_submenu_page('wp_discourse_options', 'wp_discourse_options');
	//Hide "Discourse → Connection".
	remove_submenu_page('wp_discourse_options', 'connection_options');
	//Hide "Discourse → Publishing".
	remove_submenu_page('wp_discourse_options', 'publishing_options');
	//Hide "Discourse → Commenting".
	remove_submenu_page('wp_discourse_options', 'commenting_options');
	//Hide "Discourse → Text Content".
	remove_submenu_page('wp_discourse_options', 'text_content_options');
	//Hide "Discourse → Webhooks".
	remove_submenu_page('wp_discourse_options', 'webhook_options');
	//Hide "Discourse → DiscourseConnect".
	remove_submenu_page('wp_discourse_options', 'sso_options');
	//Hide "Discourse → Logs".
	remove_submenu_page('wp_discourse_options', 'log_viewer');
}

add_action('admin_menu', 'plt_hide_wp_discourse_menus', 11);
Where do I put this code?