I am running in the same issue.

The two parameters have been removed in this commit when introducing cleanplotlib.
And in the next commit cleanplotlib was replaced by dufte and in that commit the legend label plotting has become hardcoded.

For combined graphs that is not such a big issue, as it will only display the temperature y axis on the left. But when plotting the CPU frequency of one measurement together with the CPU frequency the temperature legend label overlaps the y axis showing the CPU frequency intervals.

In my fork of this project I've reinstated --hide-legend and --line-width options https://github.com/shortbloke/stressberry

I've also added a --legacy-style to switch back to the previous type of graph and legend. Finally, I'm experimenting with adding a --color-blind-friendly option that changes the color pallet used to be more easily interpreted by those with colour blindness, though this is limited to use with --legacy-style.

More than happy to do a PR if @nschloe wants to allow the mixing of old and new styles.

@shortbloke please create a PR!

@p1r473 Done. Not sure if it will be accepted.