Remove AOSP stock recovery

This commit will remove AOSPs stock recovery from being built and flashed upon installation.

Credits:

@CallMeAldy
@snak3ater

Sqaushed:
Signed-off-by: Jean Francis Dominique S. Mabalot <jmabalot@google.com>
Remove AOSP stock recovery(2)

2nd commit for removing stock recovery. FINALLY!

Signed-off-by: Jean Francis Dominique S. Mabalot <jmabalot@google.com>
fix up ota_from_target_files symlink detection.
Note that update-api is a lie.

Change-Id: Idc2d92630e94ccbd60b5d5447c3762db8e5096f8
add adb to the disttools

Change-Id: I898fa5c9396606144e57dba8453f476b9e9440ab
envsetup: do not print an error if complete fails

complete is a bashism; so it will fail on other shells. Avoid printing
an error if that is the case.

Change-Id: Id6d6311792f409cc3a697c7a2bb003863f1afe60