Developer Features: Remove controls via filters

[ryanwelcher]

Based on this comment, it's probably a good idea to be able to turn off some of the controls as needed.

This will be done via a filter for now but could also be an admin screen in future updates.

[carstingaxion]

Maybe we could help solving that problem on a higher level, here for example: https://github.com/WordPress/gutenberg/issues/50458