Issue #3173976 by shetpooja04: Remove unused variable $file_path in ConfigTest.php, system module

(cherry picked from commit 1e5b9c76)

core/modules/system/tests/src/Functional/File/ConfigTest.php

@@ -32,7 +32,6 @@ public function testFileConfigurationPage() {
     // Set the file paths to non-default values.
     // The respective directories are created automatically
     // upon form submission.
-    $file_path = $this->publicFilesDirectory;
     $fields = [
       'file_default_scheme' => 'private',
     ];