Remove extra line added during rebase

Author: jonathan343

packages/aws-event-stream/src/aws_event_stream/_private/serializers.py

@@ -75,7 +75,6 @@ async def send(self, event: E) -> None:
         except Exception as e:
             await self.close()
             raise IOError("Failed to write to stream.") from e
-        await self._writer.write(result.encode())
 
     async def close(self) -> None:
         if self._closed: