No. Those items are not part of the house, they are not connected, except as one would connect a lamp! (unless it is a built-in refrigerator. The inclusion of these 3 items are completely negotiable. In this Seller's market, I would be very careful about asking for those things in a buyers contract. You can always ask later, or negotiate a price. But there is no "what is normally done?" It is whatever will get you the house.
But if, in the MLS, they say "refrigerator, washer and dryer" that is different. They usually say hookups only if the appliances are not included.
If your seller took them, and they were listed, your only recourse is small claims court.