commands/version: Fix the number of arguments that can be passed

Author: rajivr

commands/version.go

@@ -1,40 +1,21 @@
 package commands
 
 import (
-	"fmt"
-
 	"io"
 	"os"
 
 	"github.com/docker/machine/libmachine"
-	"github.com/docker/machine/libmachine/mcndockerclient"
 )
 
 func cmdVersion(c CommandLine, api libmachine.API) error {
 	return printVersion(c, api, os.Stdout)
 }
 
 func printVersion(c CommandLine, api libmachine.API, out io.Writer) error {
-	if len(c.Args()) == 0 {
-		c.ShowVersion()
-		return nil
-	}
-
-	if len(c.Args()) != 1 {
-		return ErrExpectedOneMachine
-	}
-
-	host, err := api.Load(c.Args().First())
-	if err != nil {
-		return err
-	}
-
-	version, err := mcndockerclient.DockerVersion(host)
-	if err != nil {
-		return err
+	if len(c.Args()) != 0 {
+		return ErrTooManyArguments
 	}
 
-	fmt.Fprintln(out, version)
-
+	c.ShowVersion()
 	return nil
 }