well, Farhan, bittrex is not the only exchange. Am sure there must be other exchanges. In the short run, have them moved over to other exchanges and try to get rid of em as quickly as possible by exchanging for whatever little you'd get for them in BTC /ETH.
If Bittrex is going to take 'em off, I think sooner rather than later they're going to crash. This, however, is just my personal take. My 2 cents.
RE: Bittrex to remove 82 Coins by the end of the Month