Issue #2774071: fix Drupal.Classes, and sort use

Issue #2774071

1. Fix Use statements should be sorted alphabetically. SlevomatCodingStandard.Namespaces.AlphabeticallySortedUses.IncorrectlyOrderedUses
2. The closing brace for the class must have an empty line Drupal.Classes.ClassDeclaration.CloseBraceAfterBody
3. Drupal.Classes.UnusedUseStatement.UnusedUse
4. PSR2.Namespaces.UseDeclaration.SpaceAfterLastUse

src/Controller/TokenDevelController.php

@@ -106,4 +106,5 @@ class TokenDevelController extends ControllerBase {
 
     return $build;
   }
+
 }