[login_manager] Remove deprecate methods from dbus policy
[login_manager] Remove deprecate methods from dbus policy

SetOwnerKey, *Property and *Whitelist* have all been deprecated for many releases.
They're gone now, so stop referring to them in the service's dbus policy.

BUG=chromium-os:34135
TEST=suite:smoke
STATUS=Fixed

Change-Id: I8e398c68793f0779f5e4a6b3c49ffa6e19c35cce
Reviewed-on: https://gerrit.chromium.org/gerrit/32942
Tested-by: Chris Masone <98e3d65c6b0e9e2391eb4c2e8b1e572b77e544ed@chromium.org>
Reviewed-by: Mattias Nissler <f2124f8e21694335a48d099eb9510c5c4dda0d0b@chromium.org>
Commit-Ready: Chris Masone <98e3d65c6b0e9e2391eb4c2e8b1e572b77e544ed@chromium.org>

chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager