fix double definiton

fixtures/completion/constant_with_namespace.php

@@ -21,26 +21,3 @@ namespace {
 
     HELLO\world();
 }
-<?php
-
-namespace HELLO {
-
-    /**
-     * Does something really cool!
-     */
-    function world() {
-
-    }
-
-    \HE
-}
-
-namespace {
-
-    /**
-     * Lorem ipsum dolor sit amet.
-     */
-    define('HELLO', true);
-
-    HELLO\world();
-}