I claim the ornamental design for a toilet, shown and described.
FIG. 1 is a front view of a toilet showing my new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a top, front, ride side perspective view thereof.
Broken lines of the disclosure are for illustrative purposes only and form no part of the claimed design. The appearance of any portion of the article between dash-dot lines forms no part of the claimed design.