How to Hide WP Data Access Admin Menus

function plt_hide_wp_data_access_menus() {
	//Hide "Settings → WP Data Access".
	remove_submenu_page('options-general.php', 'wpdataaccess');

	//Hide "WP Data Access".
	remove_menu_page('wpda_navi');
	//Hide "WP Data Access → Tool Guide".
	remove_submenu_page('wpda_navi', 'wpda_navi');
	//Hide "WP Data Access → App Builder".
	remove_submenu_page('wpda_navi', 'wpda_apps');
	//Hide "WP Data Access → Data Explorer".
	remove_submenu_page('wpda_navi', 'wpda');
	//Hide "WP Data Access → SQL Query Builder".
	remove_submenu_page('wpda_navi', 'wpda_query_builder');
	//Hide "WP Data Access → Upgrade".
	remove_submenu_page('wpda_navi', 'wpda_navi-pricing');
}

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

Where do I put this code?