fix linter issues

Author: paulyufan2

cns/middlewares/k8sSwiftV2.go

@@ -3,6 +3,7 @@ package middlewares
 import (
 	"context"
 	"fmt"
+	"net/netip"
 
 	"github.com/Azure/azure-container-networking/cns"
 	"github.com/Azure/azure-container-networking/cns/configuration"

cns/middlewares/k8sSwiftV2_linux.go

@@ -2,12 +2,9 @@ package middlewares
 
 import (
 	"fmt"
-	"net/netip"
 
 	"github.com/Azure/azure-container-networking/cns"
-	"github.com/Azure/azure-container-networking/cns/configuration"
 	"github.com/Azure/azure-container-networking/cns/logger"
-	"github.com/Azure/azure-container-networking/cns/middlewares/utils"
 	"github.com/Azure/azure-container-networking/crd/multitenancy/api/v1alpha1"
 	"github.com/pkg/errors"
 )