Remove RDP plugin

[ilija-lazoroski]

What does this PR do?

Issue #put issue number here.

Add any further explanations here.

PR Checklist

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

Testing Checklist

• [x] Added relevant unit tests?
• [x] Do all unit tests pass?
• [x] Do all end-to-end tests pass?
• [ ] Any other testing performed?

  Tested by {Running the Monkey locally with relevant config/running Island/...}

• [x] If applicable, add screenshots or log transcripts of the feature working

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.95%. Comparing base (96fc9ff) to head (67d93b3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #4252 +/- ## =========================================== + Coverage 76.97% 77.95% +0.98% =========================================== Files 430 422 -8 Lines 13599 13144 -455 Branches 18 18 =========================================== - Hits 10468 10247 -221 + Misses 3131 2897 -234 ```

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