Remove the VisibleForTesting annotation.

The MdnsRecord related classes are intended to be accessed from
the non-testing class MndsUtils. Therefore, remove the
unnecessary VisibleForTesting annotations from these classes.

Fix: 376587954
Test: atest ConnectivityCoverageTests NsdManagerTest
Change-Id: Ie24fd752a8ee8f007ac725052cf533eb161dffe7
4 files changed