I mean you can do something like dry ice hash and then press the sift - but thats mostly trichomes which actually don't contain much water. Its the water contained in fresh plant material that is the problem. Trichomes are not water soluable, which is why we have to either use a solvent (butane, alcohol etc.) or a mechanical means (bubble hash, dry ice hash etc.) or heat (pressing) to remove them from the watery plant material.