Staging: slicoss: clean up SLIC_DUMP_ENABLED

As SLIC_DUMP_ENABLED was disabled, remove the code that it was keeping
from being built as it was not ever used.  This removed a lot.

Cc: Lior Dotan <liodot@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>