Revert "Change loadRoutesFrom to accept $attributes (#34866)" (#34909)

This reverts commit e719250.

src/Illuminate/Support/ServiceProvider.php

@@ -8,7 +8,6 @@
 use Illuminate\Contracts\Foundation\CachesRoutes;
 use Illuminate\Contracts\Support\DeferrableProvider;
 use Illuminate\Database\Eloquent\Factory as ModelFactory;
-use Illuminate\Support\Facades\Route;
 use Illuminate\View\Compilers\BladeCompiler;
 
 abstract class ServiceProvider
@@ -137,14 +136,12 @@ protected function mergeConfigFrom($path, $key)
      * Load the given routes file if routes are not already cached.
      *
      * @param  string  $path
-     * @param  array  $attributes
-     *
      * @return void
      */
-    protected function loadRoutesFrom($path, array $attributes = [])
+    protected function loadRoutesFrom($path)
     {
         if (! ($this->app instanceof CachesRoutes && $this->app->routesAreCached())) {
-            Route::group($attributes, $path);
+            require $path;
         }
     }