Minor fixes in RouteController.

- Remove the definition of fib_rule_uid_range, since it's now in
  the UAPI headers.
- Fix the comment on PRIO_THROW, which is inaccurate.

Test: bullhead builds, boots
Test: netd_{unit,integration}_test pass
Change-Id: I52ced26c4ea21925140d6ed86991e50cff7bd46a
1 file changed