chore: Revert adding an EventScrubber

[bitsandfoxes]

I jumped the gun here and bought into what the Python SDK is doing too early.
After talking to @bruno-garcia there are a bunch of things to consider. The most glaring ones:

• The SDK should not grab any sensitive data by default. So there should not be a need to scrub things we know that should not be there from the event after the fact.
• Scrubbing the stacktrace: That'd open a whole can of worms for grouping.

We should take the issues regarding "The SDK is grabbing X" and "The SDK is not filtering Y" on a one-by-one basis and look into those, instead of creating a blanket scrubbing solution.

#skip-changelog