remove arduino parse_board_command
remove arduino parse_board_command

the Userspace.mk was based on the Arduino.mk. some commands like
the parse_board_command is not applicable to Userspace.mk

bugobliterator/BUAGI,prpplague/Userspace-Arduino,prpplague/Userspace-Arduino,prpplague/Userspace-Arduino,bugobliterator/BUAGI,bugobliterator/BUAGI,prpplague/Userspace-Arduino,bugobliterator/BUAGI,bugobliterator/BUAGI,bugobliterator/BUAGI