Both TcpRepairWindow and TcpKeepaliveController(user) are in the
connectivity module, so TcpRepairWindow doesn't need to be
the module-lib API. Thus, remove TcpRepairWindow from
module-lib API.
Bug: 172183305
Test: m update-api
Change-Id: I8fde726f8ad73637e6deab69ea83b3699bb2cf45