Revert "virtio-pci: harden INTX interrupts"

This reverts commit 080cd7c3. Since
the MSI-X interrupts hardening will be reverted in the next patch. We
will rework the interrupt hardening in the future.

Fixes: 080cd7c3 ("virtio-pci: harden INTX interrupts")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20220323031524.6555-1-jasowang@redhat.com


Signed-off-by: Michael S. Tsirkin <mst@redhat.com>