Revert "ALSA: hda - Added model selection for iMac 24""

This reverts commit 3e0e469f

.

The patch introduced a wrong detection of other intel Macs with
ALC88* codec because they share the same PCI SSID (but have different
codec subsystem-IDs).  See http://lkml.org/lkml/2008/8/24/143

Reported-and-tested-by: Guillaume Chazarain <guichaz@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>