MIPS: mach-rm: Remove recursive include of cpu-feature-overrides.h

cpu-feautre-overrides.h in mach-rm unnecessarily includes itself, so
drop the pointless include

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15462/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>