Reset a simulation takes a lot of time

[guillaumejparis]

Description

For a simulation with 4 injects it takes something like 2 minutes and increasing with injects number.

[RomuDeuxfois]

Need to sync with @heditar , who is leading the performance tests, to add this API to the test suite.

[heditar]

any simulation ? or a simulation linked to scenario with a lof of simu ?

[heditar]

Seems to only be caused by this line exercise.getInjects().forEach(Inject::clean);. On my instance without that line the response is below 200ms (from 20s originally)