Remove redundant 'self' subcommand stanza

Signed-off-by: Daniel Silverstone <[email protected]>

Author: kinnison

src/cli/rustup_mode.rs

@@ -510,25 +510,6 @@ pub fn cli() -> App<'static, 'static> {
                                 .default_value(Profile::default_name()),
                         ),
                 ),
-        )
-        .subcommand(
-            SubCommand::with_name("self")
-                .about("Modify the rustup installation")
-                .setting(AppSettings::VersionlessSubcommands)
-                .setting(AppSettings::DeriveDisplayOrder)
-                .setting(AppSettings::SubcommandRequiredElseHelp)
-                .subcommand(
-                    SubCommand::with_name("update").about("Download and install updates to rustup"),
-                )
-                .subcommand(
-                    SubCommand::with_name("uninstall")
-                        .about("Uninstall rustup.")
-                        .arg(Arg::with_name("no-prompt").short("y")),
-                )
-                .subcommand(
-                    SubCommand::with_name("upgrade-data")
-                        .about("Upgrade the internal data format."),
-                ),
         );
 
     // Clap provides no good way to say that help should be printed in all