Any anchor planes that you have created can be permanently removed from the model.
Before you delete an anchor plane, make sure you have a deflection (warpage) result displayed and an anchor plane created.
You can access all existing anchor planes by clicking Manage Anchor Planes in the Warpage Visualization Tools dialog.
(). The Warpage Visualization Tools dialog appears. 

) by pressing and holding down the Shift key while dragging your mouse cursor either towards you or away from you.