Ingo's system is still seeing strange behavior, and he
reports that is goes away if the rest of the deferred
accept changes are reverted too.

Therefore this reverts e4c78840
("[TCP]: TCP_DEFER_ACCEPT updates - dont retxmt synack") and
539fae89 ("[TCP]: TCP_DEFER_ACCEPT
updates - defer timeout conflicts with max_thresh").

Just like the other revert, these ideas can be revisited for
2.6.27
Signed-off-by: David S. Miller <davem@davemloft.net>