Remove un-needed func

app.go

@@ -133,7 +133,6 @@ func compileTime() time.Time {
 func NewApp() *App {
 	return &App{
 		Name:         filepath.Base(os.Args[0]),
-		HelpName:     "", // setup will fill this later
 		Usage:        "A new cli application",
 		UsageText:    "",
 		BashComplete: DefaultAppComplete,

command.go

@@ -62,9 +62,6 @@ type Command struct {
 	// cli.go uses text/template to render templates. You can
 	// render custom help text by setting this variable.
 	CustomHelpTemplate string
-
-	// categories contains the categorized commands and is populated on app startup
-	categories CommandCategories
 }
 
 type Commands []*Command
@@ -316,17 +313,6 @@ func (c *Command) VisibleFlags() []Flag {
 	return visibleFlags(c.Flags)
 }
 
-// VisibleCommands returns a slice of the Commands with Hidden=false
-func (c *Command) VisibleCommands() []*Command {
-	var ret []*Command
-	for _, command := range c.Subcommands {
-		if !command.Hidden {
-			ret = append(ret, command)
-		}
-	}
-	return ret
-}
-
 func (c *Command) appendFlag(fl Flag) {
 	if !hasFlag(c.Flags, fl) {
 		c.Flags = append(c.Flags, fl)