KVM: Move irqfd resample cap handling to generic code

Now that we have most irqfd code completely platform agnostic, let's move
irqfd's resample capability return to generic code as well.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Michael S. Tsirkin <mst@redhat.com>

arch/x86/kvm/x86.c

@@ -2522,7 +2522,6 @@ int kvm_dev_ioctl_check_extension(long ext)
 	case KVM_CAP_PCI_2_3:
 	case KVM_CAP_KVMCLOCK_CTRL:
 	case KVM_CAP_READONLY_MEM:
-	case KVM_CAP_IRQFD_RESAMPLE:
 		r = 1;
 		break;
 	case KVM_CAP_COALESCED_MMIO: