perf tools: Remove tools/perf/util/include/asm/byteorder.h

Not used anymore. This also stops include linux/swab.h directly
from the kernel sources, remove that reference from the MANIFEST.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/MANIFEST

@@ -84,10 +84,8 @@ include/asm-generic/bitops/__fls.h
 include/asm-generic/bitops/fls.h
 include/linux/list.h
 include/linux/hash.h
-include/linux/swab.h
 arch/*/include/asm/unistd*.h
 arch/*/include/uapi/asm/unistd*.h
 tools/arch/*/include/uapi/asm/perf_regs.h
 include/linux/poison.h
 include/uapi/linux/const.h
-include/uapi/linux/swab.h