Remove Spotlight Django integration

[sentrivana]

POTel PR: #4747

[linear]

PY-1938

[ulgens]

Does #4747 resolve this?

[sentrivana]

@ulgens #4747 was merged to the potel-base branch, which was originally planned to be the new major branch. We've since stopped development on that branch, and opened major/3.0 instead. This issue is for porting the change to the new branch.