Revert "genirq/msi: Provide constants for PCI/IMS support"

This reverts commit e23d4192bf9b612bce5b24f22719fd3cc6edaa69.

IMS (Interrupt Message Store) support appeared in v6.2, but there are no
users yet.

Remove it for now. We can add it back when a user comes along.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Helgaas <[e-mail]>
Reviewed-by: Kevin Tian <[e-mail]>
Reviewed-by: Thomas Gleixner <[e-mail]>

include/linux/irqdomain_defs.h

···
 	DOMAIN_BUS_PCI_DEVICE_MSIX,
 	DOMAIN_BUS_DMAR,
 	DOMAIN_BUS_AMDVI,
-	DOMAIN_BUS_PCI_DEVICE_IMS,
 	DOMAIN_BUS_DEVICE_MSI,
 	DOMAIN_BUS_WIRED_TO_MSI,
 };

include/linux/msi.h

···
 	MSI_FLAG_MSIX_CONTIGUOUS	= (1 << 19),
 	/* PCI/MSI-X vectors can be dynamically allocated/freed post MSI-X enable */
 	MSI_FLAG_PCI_MSIX_ALLOC_DYN	= (1 << 20),
-	/* Support for PCI/IMS */
-	MSI_FLAG_PCI_IMS		= (1 << 21),
 };
 
 /**

include/linux/msi_api.h

···
  */
 enum msi_domain_ids {
 	MSI_DEFAULT_DOMAIN,
-	MSI_SECONDARY_DOMAIN,
 	MSI_MAX_DEVICE_IRQDOMAINS,
 };