demonetise

demonetize, demonetise (British) 1. To stop using a particular metal to make coins. 2. To withdraw units of money from circulation. 3. To deprive (an issue of postage stamps) of validity by legal methods and without marking the stamps themselves.
Found on http://www.wordinfo.info/words/index/info/view_unit/3678/

demonetise

to deprive of monetary value; to withdraw from circulation
Found on http://phrontistery.info/d.html
No exact match found