tests: add lscpu dump for ppc cpu with no cache size

Taken from qemu-system-ppc (qemu 1.7) machine with installed
debian 7.4 wheezy, kernel 3.2.0-4-powerpc.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: cleanup, remove unused lscpu output

All these files are not used since a292bbde or 0d86c70a.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>