Revert e51d3b9: Do not print the prompt after exiting raw REPL.

This was leading to multiple prompts being issued after a sequence of
raw repl commands are executed.

Author: glenn20

src/mpremote_path/board.py

@@ -228,7 +228,6 @@ def raw_repl(self, message: Any = "") -> Generator[SerialTransport, None, None]:
                 self._transport.exit_raw_repl()
                 if not interrupted:
                     self._transport.read_until(4, b">>> ")
-                    self.writer(b">>> ")
 
     def soft_reset(self) -> None:
         """Perform a micropython soft reset of the board."""