Registrar schedules an event every second to do
fRoster-CheckSanity(). This uses 2.5% cpu on my machine
when idle. Changing it to five seconds lowers it to 0.1%
waddlesplash then pointed me to this bug which changes it
to watch for team deletion and call fRoster->CheckSanity()
As I know little in this area, it's mostly based on what
LaunchDaemon does in MessageRecieved.
Change-Id: Ie69f9399cab41d2d492d469b5d3dc88e6080c15c
Reviewed-on: https://review.haiku-os.org/c/876
Reviewed-by: waddlesplash <waddlesplash@gmail.com>