Since the core dumper now uses regsets, the old core dump functions are
now unused. Remove them.
Signed-off-by: NAlex Smith <alex@alex-smith.me.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7456/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>