BUG - Remove old collections from crawler uat when back to normal

[emrojo]

Describe the bug
Mongodb limit on uat is 30gb, but we have reached the limit. When the database is back to normal remove any old collections, but make sure we leave some of them for testing.

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[emrojo]

We've removed old mongo collections from uat, so now we are under 1gb size, we expect a growth of 70-150mb every week.