Removed automatic enabling of GPUDirect RDMA for MVAPICH2
Removed automatic enabling of GPUDirect RDMA for MVAPICH2

This enables benchmarking GDR against cuda-aware MPI

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