accessd: Turn off debug mode by default

Commit 31610e70e7f8e0768c26c592e4645b9b60738f65 accidentally turned on
the DEBUG constant. Turn it back off, so we don't spew debug messages
by default.

Change-Id: Ib803ca46732968d601b4b1d18416924cbbd7ff75
Merge pull request #2 from adeason/accessd-nodebug

accessd: Turn off debug mode by default