mm: remove the unused ARCH_HAS_HMM_DEVICE Kconfig option

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Dan Williams <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

Author: Christoph Hellwig

mm/Kconfig

@@ -675,16 +675,6 @@ config ARCH_HAS_HMM_MIRROR
 	depends on (X86_64 || PPC64)
 	depends on MMU && 64BIT
 
-config ARCH_HAS_HMM_DEVICE
-	bool
-	default y
-	depends on (X86_64 || PPC64)
-	depends on MEMORY_HOTPLUG
-	depends on MEMORY_HOTREMOVE
-	depends on SPARSEMEM_VMEMMAP
-	depends on ARCH_HAS_ZONE_DEVICE
-	select XARRAY_MULTI
-
 config ARCH_HAS_HMM
 	bool
 	default y