init: Special case logd

Logd is a special case. Every other service effectively has an implicit
dependency on it for sending log messages to it and even init itself
depends on it for it's own log messages.

init/src/script.rs

@@ -45,9 +45,6 @@ pub enum Command {
     // Service
     Service(Service),
 
-    // Modify env
-    Stdio(String),
-
     // Misc
     Echo(String),
     Nothing,
@@ -62,12 +59,6 @@ impl Command {
         match cmd.as_str() {
             "requires_weak" => Ok(Command::RequiresWeak(args.map(UnitId).collect::<Vec<_>>())),
             "echo" => Ok(Command::Echo(args.collect::<Vec<_>>().join(" "))),
-            "stdio" => {
-                let Some(stdio) = args.next() else {
-                    return Err("init: failed to set stdio: no argument".to_owned());
-                };
-                Ok(Command::Stdio(stdio))
-            }
             "notify" => {
                 let process = Process::parse(args)?;