Remove unused import
Merge branch 'master' of gh-personal:mpdavis/vinz

# By Max Peterson
# Via Michael Davis (2) and Max Peterson (1)
* 'master' of gh-personal:mpdavis/vinz:
  Was not removing a pub_key from the user's key_list before deleting it
  Add creation_date and modified_date to a number of REST endpoints.
Making the scanner multi processed
Fixing tests
Merge pull request #90 from mpdavis/scan

Multiprocessed scanning