Actually, the opposite of plating would be anodizing.

I was asked to hide some existing functionality, although in my case it was because we were borrowing code from another site we owned and we were embracing simplicity.  I wasn't quite sure what to call it, and wikipedia didn't seem to be of much help, at least not in their gold-plating article.

Finding the opposite of plating was difficult, although I remembered from my freshman year college materials course that it had to exist.  Wikipedia was helpful in that case: http://en.wikipedia.org/wiki/Anodizing

And finishing.com backed me up almost verbatim:

"Anodizing is almost the opposite of plating, in that the polarities are reversed. Unfortunately, simply reversing the polarity (making the work cathodic) does not qualify you as a plater. Just as there is some degree of skill required for successful anodizing, a similar amount of skill should be expected to be a competent plater. And since there are so many different plating scenarios, you haven't even scratched the surface..."

I considered whether I could have achieved the same result by referring to shit-plating, but that doesn't seem like something one could use in an office conversation. Much like Pressed Fruit Bowl.

Title: Actually, the opposite of plating would be anodizing.

Snarky: I'm not gold plating.  The PMO wants to hide functionality they asked for without business approval.  We're calling it tin plating.