[WIP] Removes recommendation to brand human bitcoin addresses

[ConorOkus]

Follow up to https://github.com/BitcoinDesign/Guide/pull/1203

A key reason behind this change is to prevent the perception that "[Company name] bitcoin address" are not interoperable with each. We have a UI mockups that would need to be modified to reflect this as well.

See here for further commentary.

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[GBKS]

I think this needs more discussion than the one short comment by Matt that is being linked.