Allow use of leftover component dust in FlashMintWrapped issuance

contracts/exchangeIssuance/FlashMintWrapped.sol

@@ -686,9 +686,6 @@ contract FlashMintWrapped is Ownable, ReentrancyGuard {
         continue;
       }
 
-      // snapshot balance of required component before swap and wrap operations
-      uint256 componentBalanceBefore = IERC20(_requiredComponents[i]).balanceOf(address(this));
-
       // swap input token to underlying token
       _swapToExact(
         _inputToken, // input
@@ -708,11 +705,7 @@ contract FlashMintWrapped is Ownable, ReentrancyGuard {
         );
       }
 
-      // ensure obtained component amount covers required component amount for issuance
-      // this is not already covered through _swapToExact because it does not take wrapping into consideration
-      uint256 componentBalanceAfter = IERC20(_requiredComponents[i]).balanceOf(address(this));
-      uint256 componentAmountObtained = componentBalanceAfter.sub(componentBalanceBefore);
-      require(componentAmountObtained >= requiredAmount, "FlashMint: UNDERBOUGHT_COMPONENT");
+      require(componentBalanceAfter >= requiredAmount, "FlashMint: INSUFFICIENT_COMPONENT_BALANCE");
     }
 
     // ensure left over input token amount covers issuance for component if input token is one of the Set components