Petra Ecclestone -- Get Candy's Stuff Out of My Mansion!

Petra Ecclestone is purging her $85 million mega-mansion of everything reminiscent of Candy Spelling ... from the expensive chandeliers to fireplaces and even wall lights ... TMZ has learned.

Ecclestone recently invited 4 major antique dealers to check out the 57,000 square foot Holmby Hills mansion and bid on anything they could move out of the place.

Sources closes to the situation tell TMZ ... Petra was NOT a fan of the way the home looked when Candy was living there ... and now she's on a mission to rid the place of everything from the Spelling era so she can start over from scratch.

One of the dealers invited in to the antique event was Jan's & Co. Fine French Antiques -- which picked up several Baccarat crystal chandeliers, a 19th century Edwardian style marble fireplace, the set of 4 French Louis XV style gilt-bronze wall lights from the dining room ... and more.