ACPI: NFIT: Remove block aperture support

Delete the code to parse interleave-descriptor-tables and coordinate I/O
through a BLK aperture.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/164688418240.2879318.400185926874596938.stgit@dwillia2-desk3.amr.corp.intel.com


Signed-off-by: Dan Williams <dan.j.williams@intel.com>