overseer: send_msg should not return an error (#1995)

* send_message should not return an error

* Apply suggestions from code review

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* s/send_logging_error/send_and_log_error

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

polkadot/parachain/test-parachains/adder/collator/src/main.rs

@@ -86,13 +86,11 @@ fn main() -> Result<()> {
 						};
 						overseer_handler
 							.send_msg(CollationGenerationMessage::Initialize(config))
-							.await
-							.expect("Registers collator");
+							.await;
 
 						overseer_handler
 							.send_msg(CollatorProtocolMessage::CollateOn(PARA_ID))
-							.await
-							.expect("Collates on");
+							.await;
 
 						Ok(full_node.task_manager)
 					}