staging: lustre: libcfs: discard KLASSERT()

This appears to be intended for assertions that only make
sense in the kernel, but as this code is now kernel-only,
it doesn't make sense any more.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>