Go nuts. Get it as clean as you wish.
But, be smart about any bearing surfaces: hubs, headsets, BB, perhaps jockey wheels. If you are replacing or repacking them, then clean them whistle clean as well. But if you are not, then do not blast them with water. Or let degreaser get into them; especially WD-40.
jim
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Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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SB forever