Ok.. I assume you are meaning gasoline instead of Ethanol.... as that is just alcohol... and I do not think it leaves any residue ....
I think Tom is correct... just drive it and keep the normal filters replaced regularly for a while in case something does come out of the bottom of that tank...
If you really did run it out of gas before it sat.... I suggest, once you have pulled out this initial ' dissolving' diesel fuel... that you keep the tank above half full for a while... just in case... but given you did not let an entire tank of gasoline evaporate from the tank... I think you have very little to worry about..
https://pubchem.ncbi.nlm.nih.gov/compound/ethanol