LU-6245 libcfs: remove sysctl module handling

LU-6245 libcfs: remove sysctl module handling

Remove the sysctl handling we have for module parameters.
This code only gets built if CFS_SYSFS_MODULE_PARM is not
1 which is never the case. So this code is never built.
Plus this code has long been replaced by the sysfs module
parameters handling.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Change-Id: I5635bfd75a53bdd25af51c65fb1c2550d3cbbbaa
Reviewed-on: http://review.whamcloud.com/19459
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Chris Horn <hornc@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>