Remove dir

install/index.php

@@ -199,7 +199,7 @@ $app->post('/', function (Request $request, Response $response, Filesystem $stor
     cleanDirectory(__DIR__.'/../resources/cache');
     cleanDirectory(__DIR__.'/../resources/sessions');
 
-    //removeDirectory(__DIR__.'/../install');
+    removeDirectory(__DIR__.'/../install');
 
     // if is upgrading and existing installation, put it out maintenance
     if ($installed) {