Remove SPEAKER_SHUTDOWN pin.

Author: kattni

ports/raspberrypi/boards/adafruit_macropad_rp2040/pins.c

@@ -17,8 +17,6 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO13) },
 
-    // SPEAKER_SHUTDOWN is deprecated and will be removed in a future release.
-    { MP_ROM_QSTR(MP_QSTR_SPEAKER_SHUTDOWN), MP_ROM_PTR(&pin_GPIO14) },
     { MP_ROM_QSTR(MP_QSTR_SPEAKER_ENABLE), MP_ROM_PTR(&pin_GPIO14) },
     { MP_ROM_QSTR(MP_QSTR_SPEAKER), MP_ROM_PTR(&pin_GPIO16) },