diff --git a/accounts/abi/numbers.go b/accounts/abi/numbers.go
index 0cd97cc66f..a551520912 100644
--- a/accounts/abi/numbers.go
+++ b/accounts/abi/numbers.go
@@ -48,12 +48,3 @@ var (
 func U256(n *big.Int) []byte {
 	return math.PaddedBigBytes(math.U256(n), 32)
 }
-
-// checks whether the given reflect value is signed. This also works for slices with a number type
-func isSigned(v reflect.Value) bool {
-	switch v.Type() {
-	case intTS, int8TS, int16TS, int32TS, int64TS, intT, int8T, int16T, int32T, int64T:
-		return true
-	}
-	return false
-}