Revert "[NET]: Fix races in net_rx_action vs netpoll."

Revert "[NET]: Fix races in net_rx_action vs netpoll."

This reverts commit 29578624e354f56143d92510fff33a8b2aaa2c03.

Ingo Molnar reports complete breakage with his e1000 card (no
networking, card reports transmit timeouts), and bisected it down to
this commit.  Let's figure out what went wrong, but not keep breaking
machines until we do.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Olaf Kirch <olaf.kirch@oracle.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>