MAINTAINERS: drop include/linux/kho/abi/ from KHO

The KHO entry already includes include/linux/kho.  Listing its
subdirectory is redundant.

Link: https://lore.kernel.org/20260414121752.1912847-3-pratyush@kernel.org
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: prati0100

MAINTAINERS

@@ -14126,7 +14126,6 @@ F:	Documentation/admin-guide/mm/kho.rst
 F:	Documentation/core-api/kho/*
 F:	include/linux/kexec_handover.h
 F:	include/linux/kho/
-F:	include/linux/kho/abi/
 F:	kernel/liveupdate/kexec_handover*
 F:	lib/test_kho.c
 F:	tools/testing/selftests/kho/