mm: remove arch_unmap()

Now that powerpc no longer uses arch_unmap() to handle VDSO unmapping,
there are no meaningful implementions left.  Drop support for it entirely,
and update comments which refer to it.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Michael Ellerman <[email protected]>
Suggested-by: Linus Torvalds <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Reviewed-by: Liam R. Howlett <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Jeff Xu <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Pedro Falcato <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions