fix: cleanup

Author: jtakalai

contracts/MockRecipient.sol

@@ -16,7 +16,6 @@ contract MockRecipient is IERC677Receiver {
         console.log("Amount", _value);
         console.log("With data", string(_data));
         txCount += 1;
-        // revert if passed "err"
-        require(keccak256(_data) != keccak256("err"));
+        require(keccak256(_data) != keccak256("err")); // for testing: revert if passed "err"
     }
 }

contracts/MockRecipientNotERC677Receiver.sol

@@ -1,12 +1,7 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.6;
 
-import "hardhat/console.sol";
-import "./IERC677Receiver.sol";
-
-/**
-just a blank contract that doesnt implement onTokensTransferred
- */
+/** Just a blank contract that doesnt implement onTokensTransferred */
 contract MockRecipientNotERC677Receiver {
     uint public x = 1;
-}
+}

contracts/MockRecipientReturnBool.sol

@@ -3,6 +3,7 @@ pragma solidity 0.8.6;
 
 import "hardhat/console.sol";
 
+/** ERC677 recipient that returns false for error instead of reverting */
 contract MockRecipientReturnBool {
     uint public txCount;
 
@@ -15,8 +16,7 @@ contract MockRecipientReturnBool {
         console.log("Amount", _value);
         console.log("With data", string(_data));
         txCount += 1;
-        // return false if passed "err"
-        bool retval = keccak256(_data) != keccak256("err");
+        bool retval = keccak256(_data) != keccak256("err"); // for testing: return false if passed "err"
         console.log("retval", retval);
         return retval;
     }