We claim the ornamental design for a toilet, as shown and described.
FIG. 1 is a perspective view of a toilet;
FIG. 2 is a front view of the toilet shown in FIG. 1;
FIG. 3 is a top view of the toilet shown in FIG. 1;
FIG. 4 is a side view of the toilet shown in FIG. 1; and,
FIG. 5 is another side view of the toilet shown in FIG. 1.
In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design. The dot and dashed lines indicate a boundary between the claimed and unclaimed portion of the design.