I don't know how much wax you are talking about here, but...
With an old iron, you could try wicking it up. Place old towels, paper towels, or even newspaper over the wax and iron it out. You can wick out most of the wax this way but will never get all of it out.
Could also try freezing the wax, and breaking it off stuff. I would freez and break up to remove first, then might finish with wicking up the last little bit with old iron.
For large amounts on cement, begin with a putty knife, or razer blades.