**DO NOT IGNORE IT** If you do in fact have gas in the engine oil and you continue to run it you are setting yourself to destroy the engine. The gas thins out the oil and it will no longer lubricate as it should and the engine internals ie. bearings, crank and cam faces etc. etc. will wear rapidly but worse than that you could experience a hydolock situation and end up bending a rod(s). The only way gas can get into the crankcase oil is via a bad or stuck float valve (s) in the carbs. You will have to pull the carbs and address that issue. In the meantime make sure that you keep the gas turned off when stopped. And drain the crankcase and replace with fresh oil. If it was my bike I would not drive it again until it is repaired properly.