Attempt to fix build error

Author: erongd

ports/raspberrypi/boards/lilygo_t_display_rp2040/board.c

@@ -30,8 +30,6 @@
 #include "shared-module/displayio/__init__.h"
 #include "shared-module/displayio/mipi_constants.h"
 
-displayio_fourwire_obj_t board_display_obj;
-
 #define DELAY 0x80
 #define LCD_POWER 22