Revert "e1000e: Fix possible HW unit hang after an s0ix exit"

Revert "e1000e: Fix possible HW unit hang after an s0ix exit"

This reverts commit dc14ff7ab84684b991da6fac778ebecb2fa2ca8a.

Commit dc14ff7ab846 ("e1000e: Fix possible HW unit hang after an s0ix
exit") was a workaround for CSME problem to handle messages comes via H2ME
mailbox. This problem has been fixed by patch "e1000e: Enable the GPT
clock before sending message to the CSME".

Fixes: 7c28b2aaf1e5 ("e1000e: Add handshake with the CSME to support S0ix")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=214821
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>