Legend not updated when removing all traces from plot in 2.25.0

[mattmoos]

After upgrading plotly.js to 2.25.0 we noticed that the legend does not get removed when deleting all traces.

Codepen: Clicking on button removes trace but not legend entry

[archmoj]

Thanks very much for the report.

[mattmoos]

Awesome, thank you very much for the quick fix!