[CTT-2] Clean up unused {function, exception} and improve readability
- Remove ipv4MappedAddressBytesToIpv4Address because it can be covered
by parseIPv4Address.
- Remove IllegalArgumentException from parseIPv4Address because it has
never happened
- Reverse the order of upstream and downstream timeout refreshing in
refreshAllConntrackTimeouts for readability because both source and
destination of the downstream are opposite direction to the
upstream.
Bug: 190783768
Bug: 192804833
Test: atest TetheringCoverageTests
Change-Id: I6a1e44777a4357dd3847c2e2bb1fc6c3cf01617c
1 file changed
