Removed nyholm/psr7 warning

It seems that query string parameters passed via arguments finally work with nyholm/psr7.

Nyholm/psr7#214

src/Traits/RouteTestTrait.php

@@ -15,9 +15,6 @@ trait RouteTestTrait
      * @param string $routeName Route name
      * @param string[] $data Named argument replacement data
      * @param string[] $queryParams Optional query string parameters.
-     * If you're using `nyholm/psr7`, query parameters MUST be added via
-     * `$request = $request->withQueryParams($queryParams)`
-     * to be retrieved with `$request->getQueryParams();`
      *
      * @return string The route with base path
      */