How to delete flow steps in one go please

How to delete flow steps in one go, I have tried ctrl+all, FN+select all but no luck, at the minute selecting each flow step individually and deleting, I have more than 200 flow steps to delete

Hi,

Target the small bar above the steps themselves:

br,
lefa

You can shift-click to select multiple flow steps within a flow group, but not across flow groups.
You could make a Python command for deleting all empty flow steps.