2269 remove pthreportservice

[cakekoa]

What does this PR do?

Fixes part of #2269.

Removes the PTHReportService, which was reading from an unpopulated database. Removes the sections from the UI that correspond to the portions of the report that relied on the service. These portions were already empty.

PR Checklist

• Have you added an explanation of what your changes do and why you'd like to include them?
• Is the TravisCI build passing?
• Was the CHANGELOG.md updated to reflect the changes?
• Was the documentation framework updated to reflect the changes?
• Have you checked that you haven't introduced any duplicate code?

Testing Checklist

• Added relevant unit tests?

• Have you successfully tested your changes locally? Elaborate:

  Tested by running in the zoo environment

• If applicable, add screenshots or log transcripts of the feature working
  A map of the run:
  

  Observe that the domain recommendations are not displayed:
  

  Observe that the "Powerful Users" table is no longer displayed:
  

[VakarisZ]

Makes sense, I don't think this ever worked