How to Hide LogDash Activity Log Admin Menus

function plt_hide_logdash_activity_log_menus() {
	//Hide the "LogDash" menu.
	remove_menu_page('logdash_activity_log');
	//Hide the "LogDash → Activity Log" menu.
	remove_submenu_page('logdash_activity_log', 'logdash_activity_log');
	//Hide the "LogDash → Settings" menu.
	remove_submenu_page('logdash_activity_log', 'logdash_settings');
}

add_action('admin_menu', 'plt_hide_logdash_activity_log_menus', 91);

Where do I put this code?