chore: remove unnecessary or outdated extensions from recommendations

[superlinkx]

Description

Removes some recommended extensions that are either unnecessary for working on BloodHound or no longer required

Motivation and Context

This PR addresses: BED-5494

Why is this change required? What problem does it solve?

Good hygiene of recommendations ensures devs aren't shown a lit of extensions that isn't strictly necessary

How Has This Been Tested?

Please describe in detail how you tested your changes.
Include details of your testing environment, and the tests you ran to
see how your change affects other areas of the code, etc.

No-op

Types of changes

• Chore (a change that does not modify the application functionality)

Checklist:

• I have met the contributing prerequisites
  • Assigned myself to this PR
  • Added the appropriate labels
  • Associated an issue: Issues and Pull Requests README #672
  • Read the Contributing guide: https://github.com/SpecterOps/BloodHound/wiki/Contributing
• I have ensured that related documentation is up-to-date
  • Open API docs
  • Code comments (GoDocs / JSDocs)
• I have followed proper test practices
  • Added/updated tests to cover my changes
  • All new and existing tests passed