Refs #4244: Prevent seg fault on Ruby 1.8.7.

Commenting out the use of the compute resources in order to prevent
seg faults on installation. These are instead required as RPMs by
the Katello RPM package thus achieving the same functionality.
Merge pull request #65 from ehelms/refs-4244

Refs #4244: Prevent seg fault on Ruby 1.8.7.