tidy: Processor tidy

[KSkwarczynski]

Pull request description

ParamNom wasn't used at all, it is a remnant of some legacy code.

Renamed ResetHistograms into Reset2DPosteriors as this is what code actually does. Reset ONLY 2d hists not all.

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Memory and CPU Usage Summary

### Memory and CPU Usage Summary

| Metric  |     Mean    |      Max    |
|---------|-------------|-------------|
| **RAM** |   345.75 MB |   358.28 MB |
| **CPU** |    96.13 %  |    98.00 %  |

Memory Usage Plot

• Job Summary Link

You can view the memory usage plot directly in the job summary from the link above.