diff --git a/src/TrailsIntentEntrypoint.sol b/src/TrailsIntentEntrypoint.sol
index 1db026a..857d31e 100644
--- a/src/TrailsIntentEntrypoint.sol
+++ b/src/TrailsIntentEntrypoint.sol
@@ -37,7 +37,6 @@ contract TrailsIntentEntrypoint is ReentrancyGuard, ITrailsIntentEntrypoint {
     error IntentExpired();
     error InvalidIntentSignature();
     error IntentAlreadyUsed();
-    error InvalidChainId();
     error InvalidNonce();
     error PermitAmountMismatch();
 
diff --git a/src/TrailsRouter.sol b/src/TrailsRouter.sol
index 22f24b9..d3a7bdd 100644
--- a/src/TrailsRouter.sol
+++ b/src/TrailsRouter.sol
@@ -293,21 +293,6 @@ contract TrailsRouter is IDelegatedExtension, ITrailsRouter, DelegatecallGuard,
         return _getBalance(token, address(this));
     }
 
-    /// forge-lint: disable-next-line(mixed-case-function)
-    function _nativeBalance() internal view returns (uint256) {
-        return address(this).balance;
-    }
-
-    /// forge-lint: disable-next-line(mixed-case-function)
-    function _erc20Balance(address _token) internal view returns (uint256) {
-        return IERC20(_token).balanceOf(address(this));
-    }
-
-    /// forge-lint: disable-next-line(mixed-case-function)
-    function _erc20BalanceOf(address _token, address _account) internal view returns (uint256) {
-        return IERC20(_token).balanceOf(_account);
-    }
-
     /// forge-lint: disable-next-line(mixed-case-function)
     function _injectAndCallDelegated(
         address token,