remove ocis config file option

ocis/pkg/config/config.go

@@ -61,7 +61,6 @@ type TokenManager struct {
 
 // Config combines all available configuration parts.
 type Config struct {
-	File         string
 	Registry     string
 	Log          Log
 	Debug        Debug

ocis/pkg/flagset/flagset.go

@@ -8,13 +8,6 @@ import (
 // RootWithConfig applies cfg to the root flagset
 func RootWithConfig(cfg *config.Config) []cli.Flag {
 	return []cli.Flag{
-		&cli.StringFlag{
-			Name:        "config-file",
-			Value:       "",
-			Usage:       "Path to config file",
-			EnvVars:     []string{"OCIS_CONFIG_FILE"},
-			Destination: &cfg.File,
-		},
 		&cli.StringFlag{
 			Name:        "log-level",
 			Value:       "info",