Improvement: Remove telemetry

[dselans]

We tried to use Posthog for getting anonymized metrics but it wasn't terribly useful so we might as well get rid of it.

There are lots of parts to plumber that need some TLC + cleanup - Telemetry is one of them.

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I don't remember exactly how telemetry is implemented but it most definitely checks the local plumber config to see if telemetry is enabled/disabled OR if it's the first execution ever - that stuff can be removed.

Also assuming that most actions (read/write/relay/etc.) have calls to telemetry that can also be removed.

I would look at the telemetry pkg and see what references it and go from there.