ulab: disable on espruino pico

this non-"express" board is nearly full.  Right now it's actually possible
just to disable the "compare" module, but as this leaves it packed
pretty full I prefer to fully disable it in order to avoid the topic
returning again soon.

Author: jepler

ports/stm/boards/espruino_pico/mpconfigboard.mk

@@ -13,3 +13,8 @@ MCU_PACKAGE = UFQFPN48
 LD_COMMON = boards/common_default.ld
 LD_FILE = boards/STM32F401xd_fs.ld # use for internal flash
 
+# Disable ulab as we're nearly out of space on this board due to
+# INTERNAL_FLASH_FILESYSTEM.  It can probably be reenabled if we enable
+# lto for this port, and if other stuff hasn't been added in the
+# meantime
+CIRCUITPY_ULAB = 0