How to remove masking tape residue from linoleum?
What you seek is a non polar organic solvent.  WD-40 is a good stand in, but even better would be xylenes which are usually available at hardware stores (that's basically what goof off is).  Really though, any non-polar solvent will work, mineral spirits, turpentine, brake cleaner, gasoline, diesel, tiki touch fuel, ether, THF, or melted lard.  The more volatile the solvent the less residue it will leave and the less child/pregnancy-friendly it is.  Brake cleaner would be very volatile and easy to clean up and is very awful to breathe.    Lard would be at the opposite end.  

Polar solvent, like alcohol, won't work as well.  

As others have said, be sure to test that it won't damage the floor.