iommu/amd: Remove unused PPR_* macros

Commit 5a0b11a1 ("iommu/amd: Remove iommu_v2 module") missed to
remove PPR_* macros. Remove these macros as its not used anymore.

No functional change intended.
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240118090105.5864-2-vasant.hegde@amd.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/amd/amd_iommu.h

@@ -77,10 +77,6 @@ static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
 }
 #endif
 
-#define PPR_SUCCESS			0x0
-#define PPR_INVALID			0x1
-#define PPR_FAILURE			0xf
-
 int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,
 			   int status, int tag);