Disconnect both ends of the water supply tube at the shutoff valve and at the toilet tank. [substeps] You want the toilet and tank to be as dry as possible before you remove it, so go a step further and use a sponge to soak up any water that's left after you flush.
[header] How to remove a toilet [title] Get rid of the water. [step] Begin by turning off the shutoff valve on the water supply line. Then flush the toilet to remove all the water from the tank and the bowl.