Comment 1 for bug 1500390

the variables in there stem from a time where the OEM team had a massively hacked up live-build image (even back before any images became available outside of the OEM team, for an image that ran Ubuntu inside an android chroot).
/etc/environemnt needs to only carry PATH by default, nothing else.

to clean up the current mess a joined effort is required between QA and some developer who does the cleaning to actually find out which of these vars are still needed at all. vars that are still needed should be moved to /etc/profile.d snippets or similar, everything else needs to be dropped.