Or, you can simply saw the elbow with a hacksaw. Now you can remove the tank from the wall. As you unscrew the tank from the wall, support it so it doesn't fall. Next, take out the toilet bowl. Typically, the bowl is fastened to the floor with two hold-down bolts and nuts beneath trim caps.
Some toilet bowls have four hold-downs.
Unscrew the nuts. If you have trouble, you can saw them off. A mini-hacksaw works best, or you can use a regular hacksaw. To protect the bowl's finish from the saw teeth, use masking tape. Once loosened, you can lift the bowl and carry it out of the house.