Disabling replica code
Disabling replica code

This code results in a syntax error in python 2.4. I'm commenting it out to restore support on those systems.
It will need to be corrected and re-enabled before more work on replicas can be done.

joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue