Currently there is no way to clear the flow history,
Even if the flow is already deleted you will see i.e. the failures.
In production environments it is better to have a way to clean-up the failure list to have a clear view on what is going on.
It would also be really usefull to be able to query the flow history using date/time, flow, etc. as filter values.
Yeah this is needed. Also a cancel/terminate button.