[DependencyInjection] Remove an unused docblock

Author: dunglas

Compiler/AutowirePass.php

@@ -24,9 +24,6 @@
  */
 class AutowirePass extends AbstractRecursivePass implements CompilerPassInterface
 {
-    /**
-     * @var ContainerBuilder
-     */
     private $reflectionClasses = array();
     private $definedTypes = array();
     private $types;