Remove PacketRepeater destinationsSupplier logic

PacketRepeater can just try to send to both v4 and v6 multicast
addresses, and rely on MdnsReplySender to check whether the sockets have
(automatically) joined the v4 or v6 groups, so there is no need to use
this unusual lambda setup anymore.

Bug: 264947218
Test: atest MdnsProberTest MdnsAnnouncerTest
Change-Id: I09e0fa4bf14e1f31f2d2508f17e23adf1415feb7
6 files changed