InfluxDB is created and used by the monitoring services; start-monitor.py.
If monitoring is not required, these services can be stopped and the influxdb folder delete.
 

All Supported Platforms

Here is some info on managing the data stored:
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you could modify the retention policy on the database.
The autogen retention policy is currently used, which has an infinite duration (datastays around forever).

Using the influx command-line utility:
> use database tibco
> alter retention policy autogen on tibco duration 1w
would set the duration to 1 week.

<> for the syntax of duration specifications.
https://docs.influxdata.com/influxdb/v1.7/query_language/spec/#durations

<> for details on "alter retention policy".
https://docs.influxdata.com/influxdb/v1.7/query_language/database_management/#modify-retention-policies-with-alter-retention-policy

For retroactively deleting data older than 1w, you could use
(in the influx command-line utility):

> delete from ftl_metric where time < now() - 1w
> delete from ftl_event where time < now() - 1w
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This article provides inputs on managing Influx DB used by monitoring services for AS4.x