fix(torture): don't use blocking recv anymore

The PR downstack makes this workaround unnecessary.

torture/src/supervisor/comms.rs

@@ -80,15 +80,7 @@ impl RequestResponse {
         wr_stream.send(Envelope { reqno, message }).await?;
         drop(wr_stream);
 
-        // TODO: Spawning a blocking task to handle the reception of the message
-        // in the one shot channel is a workaround to make it possible to handle
-        // large messages. Using the standard `timeout(self.shared.timeout, rx).await??;`
-        // does not work, it hangs when the expected value to be received is larger than 15KiB.
-        let message = timeout(
-            self.shared.timeout,
-            tokio::task::spawn_blocking(|| rx.blocking_recv()),
-        )
-        .await???;
+        let message = timeout(self.shared.timeout, rx).await??;
 
         Ok(message)
     }