clientv3: clean up unused code.

clientv3/client.go

@@ -20,7 +20,6 @@ import (
 	"errors"
 	"fmt"
 	"net"
-	"net/url"
 	"os"
 	"strconv"
 	"strings"
@@ -667,11 +666,3 @@ func IsConnCanceled(err error) bool {
 	// <= gRPC v1.7.x returns 'errors.New("grpc: the client connection is closing")'
 	return strings.Contains(err.Error(), "grpc: the client connection is closing")
 }
-
-func getHost(ep string) string {
-	url, uerr := url.Parse(ep)
-	if uerr != nil || !strings.Contains(ep, "://") {
-		return ep
-	}
-	return url.Host
-}