PCI: Remove old serial device IDs

These IDs are no longer referenced since kernel 3.1 so I suppose we can
remove them from pci_ids.h.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>