Minor fixups

add backuptool items + fixes
remove duplicate "OPTIONS.worker_threads"
ota_from_target_files: more derps
remove backuptool

Change-Id: I517cdc49ed0b73b5d416dcbc614f56520cee6337
temp fix the edify generator for flashing

Change-Id: Ie74ebe395cb565ed57bcce083e3010535ab96a91
Signed-off-by: houst0nn <houstonn@gmail.com>