MIPS: OCTEON: Remove unused file.

cvmx-pcieep-defs.h is not mentioned anywhere in the tree, remove it.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3652/


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