Remove Perf statistics gathering to help avoid crashes [LBNE 35t]
In long duration test runs in the LBNE 35t DAQ, we noticed crashes after 1-3 hours of running.
The core dumps were a little hard to interpret, but they pointed to a possible problem in the "Perf" statistics gathering that was part of the original implementation of artdaq. These statistics are no longer used.
To try to avoid these crashes, we wanted to remove the gathering and reporting of these stats.