docs: remove minimum versions from command pages of pre v1 commands

cmd/mkdir/mkdir.go

@@ -18,9 +18,6 @@ func init() {
 var commandDefinition = &cobra.Command{
 	Use:   "mkdir remote:path",
 	Short: `Make the path if it doesn't already exist.`,
-	Annotations: map[string]string{
-		"versionIntroduced": "v0.90",
-	},
 	Run: func(command *cobra.Command, args []string) {
 		cmd.CheckArgs(1, 1, command, args)
 		fdst := cmd.NewFsDir(args)