Yes, you can withdraw your matic/maticx LP token from QuickSwap. All you need to do is go to the QuickSwap dashboard and find the LP token you have staked. Once you have located the LP token, click on the Withdraw button and enter the amount you would like to withdraw. After you have entered the amount, click on the Confirm button and the LP token will be withdrawn from your account. The LP token will then be sent to your wallet.