How Downgrade From Celebrate Edition to Standard Edition

Hello, through Steam I have purchased "Battlefrpnt 2 Celebrate edition" which means that the celebration edition was included in the game alr, I don't like having all the skins unlocked, on the contrary I would like to be able to buy them with the credits that I earn in the game to have a feeling of progress since otherwise the credits are totally useless, I was wondering if it is possible to downgrade my account from the celebration edition to the standard edition