statsmanager: remove "legacy" wording This was a leftover from when we (or rather I) thought that the old (now called "high-level") API would be removed. We deemed it useful though, so let's remove that "legacy" language and make the description more friendly.

-- Only the operators needed by net.websocket.frames are provided at this point
return {
	band   = function (a, b) return a & b end;
	bor    = function (a, b) return a | b end;
	bxor   = function (a, b) return a ~ b end;
};