chore: remove duplicate package imports (#2276)

Signed-off-by: fivecut <[email protected]>

Author: fivecut

x/common/testutil/testnetwork/validator_node.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethclient"
 	"github.com/stretchr/testify/suite"
 
@@ -74,7 +73,7 @@ type Validator struct {
 	Address sdk.AccAddress
 
 	// EthAddress - Ethereum address
-	EthAddress common.Address
+	EthAddress gethcommon.Address
 
 	// ValAddress - validator operator (valoper) address
 	ValAddress sdk.ValAddress