Kevin Costner -- I'm Not Bitter ... Over Deleted Nude Scene

It was the scene that got the chop from "For the Love of the Game" ... Kevin Costner in the buff ... but KC tells TMZ Sports the fact his junk hit the cutting room floor doesn't bother him at all.

Back when the movie came out in '99, there were reports that the scene contained full-frontal Costner nudity ... but studio execs gave the scene the chop before it hit the big screen.

(You can imagine the emotions one must feel after being told your nude scene wasn't good enough to make the cut.)

But now Costner is telling us what really went down on the set -- and if he'll ever consider dropping trou on camera ever again.

Sorry ladies, don't hold your breath ...