Merge pull request #2829 from dotcloud/refactor_opts

Refactor opts

utils/utils.go

@@ -34,18 +34,6 @@ type Fataler interface {
 	Fatal(args ...interface{})
 }
 
-// ListOpts type
-type ListOpts []string
-
-func (opts *ListOpts) String() string {
-	return fmt.Sprint(*opts)
-}
-
-func (opts *ListOpts) Set(value string) error {
-	*opts = append(*opts, value)
-	return nil
-}
-
 // Go is a basic promise implementation: it wraps calls a function in a goroutine,
 // and returns a channel which will later return the function's return value.
 func Go(f func() error) chan error {