Drop sex educator graf

So, this is by far the most controversial (and unusual) part of the code of conduct. Noisebridge has a long history of hosting sex positive events, and about the only concerns we've had about the CoC came from the Arse Electronika folk, who actively expressed confusion about what this might mean. There's no consistent set of opinions for "professional sex educators", or what "positive purposes" might be, and the statement that if you don't know what the best practices are, you shouldn't do something is not useful. It's probably a phrase you can use in an informal statement, but in a code of conduct, it resolves to saying that if you lack knowledge, you cannot ask for more info.

Sexual language can be used in harassment, but it is not in itself harassment. We should be cautious, or at least precise, about limiting speech and expression. I'd be interested in new versions of this, but for now I suggest we simply drop this paragraph.