lib/list_sort: remove unnecessary header includes

Patch series "Remove unnecessary header includes from
{tools/}lib/list_sort.c".

Remove outdated and unnecessary header includes from lib/list_sort.c and
tools/lib/list_sort.c.  Additionally, update the hunk exceptions checked
by check_headers.sh to reflect these changes.


This patch (of 3):

After commit 043b3f7b63 ("lib/list_sort: simplify and remove
MAX_LIST_LENGTH_BITS"), list_sort.c no longer uses ARRAY_SIZE() (which
required kernel.h and bug.h for BUILD_BUG_ON_ZERO via __must_be_array) or
memset() (which required string.h).  As these headers are no longer
needed, removes them.

There are no changes to the generated code, as confirmed by 'objdump -d'. 
Additionally, 'wc -l' shows that the size of lib/.list_sort.o.cmd is
reduced from 259 lines to 101 lines.

Link: https://lkml.kernel.org/r/20241012042828.471614-1-visitorckw@gmail.com
Link: https://lkml.kernel.org/r/20241012042828.471614-2-visitorckw@gmail.com
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: "Liang, Kan" <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

lib/list_sort.c

@@ -1,9 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <linux/bug.h>
 #include <linux/compiler.h>
 #include <linux/export.h>
-#include <linux/string.h>
 #include <linux/list_sort.h>
 #include <linux/list.h>