sock: Cleanup inet sockets collecing
sock: Cleanup inet sockets collecing

There is no need in 6 receive callbacks -- we can find out family and protocol
(and thus -- type) out of the inet_diag_req_v2 passed through transparent arg
of nlk request engine.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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