time_before/time_after no longer needed in TCReadoutMap?

[wesketchum]

appmodel/schema/appmodel/trigger.schema.xml

Line 409 in 99afc98

<attribute name="time_before" description="Time, in ticks, before the HSI timestamp, for the TriggerCandidate start_time" type="u32" init-value="1000" is-not-null="yes"/>

The discussion on the PR here DUNE-DAQ/trigger#419 makes me think that TCReadoutMap should no longer have a window definition associated to it ... if that's the case, then this should be removed. If it's still needed, that's fine, and we can close this issue.