remove as_command_mut

Author: Shourya742

src/bootstrap/src/utils/exec.rs

@@ -211,17 +211,6 @@ impl<'a> BootstrapCommand {
         exec_ctx.as_ref().start(self, OutputMode::Capture, OutputMode::Print)
     }
 
-    /// Provides access to the stdlib Command inside.
-    /// FIXME: This function should be eventually removed from bootstrap.
-    pub fn as_command_mut(&mut self) -> &mut Command {
-        // We proactively mark this command as executed since we can't be certain how the returned
-        // command will be handled. Caching must also be avoided here, as the inner command could be
-        // modified externally without us being aware.
-        self.mark_as_executed();
-        self.do_not_cache();
-        &mut self.command
-    }
-
     /// Mark the command as being executed, disarming the drop bomb.
     /// If this method is not called before the command is dropped, its drop will panic.
     pub fn mark_as_executed(&mut self) {