cli: Remove rad-web from help — heartwood

Due to it not being stable, and eventually the auth flow to be rewritten, it should be removed.

 use std::ffi::OsString;
 use std::process::Command;
 use std::str;
 use crate::terminal as term;
 use crate::terminal::args::{Args, Error, Help};

             term::format::dim(help.description)
         );
     }
     // Obtain the rad-web help.
     if let Ok(output) = Command::new("rad-web").arg("--help").output() {
         if let Some(description) = str::from_utf8(&output.stdout)?.lines().nth(1) {
             term::info!(
                 "\t{} {}",
                 term::format::bold(format!("{:-12}", "web")),
                 term::format::dim(description)
             );
         }
     }
     term::blank();
     term::print("See `rad <command> --help` to learn about a specific command.");
     term::blank();