Clean up permissions when uids are no longer used

The kernel eBPF maps have a blacklist to store all the uids that doesn't
have internet permission. When an app is unintalled from the device and
it is the last package on device that uses that uid, make sure we
cleaned the uid from the map and do not add no longer used uids into the
eBPF map. This action helps reduce the number of entries stored in the
map and reduce the chance of overflow the eBPF map.

Bug: 128944261
Test: PermissionMonitorTest
Change-Id: I10dd0113d00d6cf9ca39902d9721f2591d387d4a