gpnf-gv-duplicate-child-entries.php: Updated header to force redirect.

Author: spivurno

gp-nested-forms/gpnf-gv-duplicate-child-entries.php

@@ -3,6 +3,4 @@
  * This snippet has graduated from the experimental folder. 🎓
  * You can now find the snippet here:
  * https://github.com/gravitywiz/snippet-library/blob/master/gp-nested-forms/gpnf-duplicate-child-entries-on-parent-duplication.php
- *
- * Experimental Snippet 🧪
  */