At any time you can claim your EFT or UME reward and unstake your liquidity tokens from the pool.
Press the token pair symbol and maximize the window.
Go down and click "Unstake".
Choose the amount you want to unstake. You can use the "MAX" button to unstake all your LP tokens.
Confirm the transaction.
Done. Now you have your rerward tokens (EFT or UME) and LP in your wallet.
Now you can remove your liquidity and get your assets (for example, EFT and TRX) back to your wallet.
To find out how to remove liquidity read the article.