MAINT: refactor ROQ/MB weight calculation and remove weight dump
I noticed that at some stage we wound up duplicating the saving of the ROQ/MultiBand weights in their own file and the data dump. For the ROQ this additional writing can be a significant source of storage bloat. This MR does two things:
- reactors the weight calculation code to be more streamlined.
- removes the automatic writing of the ROQ/MB weights.
This was flagged by online PE folks as using significant storage resources.