Revert "[LAB-20] Enable CORS headers"
Revert "[LAB-20] Enable CORS headers"

This reverts commit 33bea147650a75aa1432d2d321c0e7179b577013.

I do CORS headers with middleware for my lab project now, and if we do
want to enable readonly CORS headers they should probably go in
middleware as well.

brandonivey/django-marimo,brandonivey/django-marimo