process replay: don't wait for process to start (#35897)

* hmm

* test proc replay determinism

* clean up

* rm

* clean up

selfdrive/test/process_replay/process_replay.py

@@ -247,11 +247,6 @@ class ProcessContainer:
       if self.cfg.init_callback is not None:
         self.cfg.init_callback(self.rc, self.pm, all_msgs, fingerprint)
 
-      # wait for process to startup
-      with Timeout(10, error_msg=f"timed out waiting for process to start: {repr(self.cfg.proc_name)}"):
-        while not all(self.pm.all_readers_updated(s) for s in self.cfg.pubs if s not in self.cfg.ignore_alive_pubs):
-          time.sleep(0)
-
   def stop(self):
     with self.prefix:
       self.process.signal(signal.SIGKILL)