internal/rosa/package: migrate stage0

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/mbf/main.go

@@ -439,8 +439,6 @@ func main() {
 		var (
 			flagGentoo   string
 			flagChecksum string
-
-			flagStage0 bool
 		)
 		c.NewCommand(
 			"stage3",
@@ -502,17 +500,6 @@ func main() {
 						"("+pkg.Encode(checksum[0].Value())+")",
 					)
 				}
-
-				if flagStage0 {
-					if err = cm.Do(func(cache *pkg.Cache) (err error) {
-						pathname, _, err = cache.Cure(rosa.Native().Std().NewStage0())
-						return
-					}); err != nil {
-						return
-					}
-					log.Println(pathname)
-				}
-
 				return
 			},
 		).Flag(
@@ -523,10 +510,6 @@ func main() {
 			&flagChecksum,
 			"checksum", command.StringFlag(""),
 			"Checksum of Gentoo stage3 tarball",
-		).Flag(
-			&flagStage0,
-			"stage0", command.BoolFlag(false),
-			"Create bootstrap stage0 tarball",
 		)
 	}