iommu/amd: Remove DMA_FQ type from domain allocation path

.. as drivers won't see DMA_FQ any more.

See commit a4fdd976 ("iommu: Use flush queue capability") for
details.
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20231016051305.13091-1-vasant.hegde@amd.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/amd/iommu.c

@@ -2148,7 +2148,6 @@ static struct protection_domain *protection_domain_alloc(unsigned int type)
 	case IOMMU_DOMAIN_IDENTITY:
 		return domain;
 	case IOMMU_DOMAIN_DMA:
-	case IOMMU_DOMAIN_DMA_FQ:
 		pgtable = amd_iommu_pgtable;
 		break;
 	/*