Fixed tron driver settings

api/gateway/tron/internal/service/gateway/driver/tron/transfer.go

@@ -2,7 +2,6 @@ package tron
 
 import (
 	"context"
-	"encoding/hex"
 	"math/big"
 	"strings"
 
@@ -18,8 +17,6 @@ import (
 const (
 	// Default fee limit for TRC20 transfers (100 TRX in SUN)
 	defaultTRC20FeeLimit = 100_000_000
-	// SUN per TRX
-	sunPerTRX = 1_000_000
 )
 
 // SubmitTransferNative submits a transfer using native TRON gRPC.
@@ -299,11 +296,3 @@ func normalizeTxHash(txHash string) string {
 	h = strings.TrimPrefix(h, "0X")
 	return strings.ToLower(h)
 }
-
-// txHashToHex converts a byte slice transaction ID to hex string.
-func txHashToHex(txID []byte) string {
-	if len(txID) == 0 {
-		return ""
-	}
-	return hex.EncodeToString(txID)
-}