Deleted flow components should not be queried by Atlas reporting task

The NiFi Atlas reporting task retrieves the flow and its components from Atlas at every execution of the task in the following way:

1. get flow
2. get each flow component
3. filter out deleted components

#1 returns references to all the subcomponents of the flow, also to the deleted ones. It seems there is no way to parameterize the Atlas query to filter out the deleted item here.

But the result of #1 already contains the status of the components, so the deleted items do not need to be queried in #2, then filter out in #3 only.

#2 and #3 can be swapped, and only the active items need to be retrieved.