[CLOSED PR] Remove RCD from ghostdrones

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From the admin side of things I'd expect griefy ghostdrones to appear to be more common relative to other griefers than they appear to the player side of things for the simple reason that ghostdrones are never going to get the benefit of the doubt that they might be an antag/rogue and consequently are more likely to get ahelped.

This doesn't mean that they aren't more likely to grief, but it is one possible explanation for the seeming disconnect between between Mordent's experience and the experience of a number of people in this thread.

Another option for the whole problem would be to raise the round limit to be a ghostdrone.