Revert "Add users/groups related to the volume daemon."

This reverts commit 0b7263bd78565fafc81c7768ff279297010fdc62.
The CL has caused VMTest failure.
https://uberchromegw.corp.google.com/i/chromeos/builders/mario%20incremental/builds/22741

BUG=None
TEST=None

Change-Id: I9ed47c184cb7b57d04c13ddad2f39e27205a3cbb
Reviewed-on: https://chromium-review.googlesource.com/218631
Reviewed-by: Peter Qiu <zqiu@chromium.org>
Commit-Queue: Peter Qiu <zqiu@chromium.org>
Tested-by: Peter Qiu <zqiu@chromium.org>
2 files changed