Match upstream behavior of retry_on_alternate_network_before_handshake

aosp/2434298 removed the connection migration option to set
retry_on_alternate_network_before_handshake and always set it to true
when getPathDegradationMigration() and AllowNonDefaultNetworkUsage() are
enabled.

This does not match upstream behavior, so it is safer to remove this
option altogether.

Test: TH
Change-Id: I380276721aa4dbff6eef89b36bd8344c4a181438
1 file changed