greybus: connection: remove duplicate protocol lookup error message

Remove duplicate protocol lookup error message, which has already been
logged.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/connection.c

@@ -247,10 +247,6 @@ gb_connection_create_range(struct greybus_host_device *hd,
 		return NULL;
 	}
 
-	if (!connection->protocol)
-		dev_warn(&connection->dev,
-			 "protocol 0x%02hhx handler not found\n", protocol_id);
-
 	return connection;
 
 err_free_connection: