The ornamental design for a two-piece toilet, as shown and described.
FIG. 1 is a perspective view of a one-piece toilet;
FIG. 2 is a front elevation view of the one-piece toilet of FIG. 1;
FIG. 3 is a back elevation view of the one-piece toilet of FIG. 1;
FIG. 4 is a right side elevation view of the one-piece toilet of FIG. 1;
FIG. 5 is a left side elevation view of the one-piece toilet of FIG. 1;
FIG. 6 is a top plan view of the one-piece toilet of FIG. 1; and,
FIG. 7 is a bottom plan view of the one-piece toilet of FIG. 1.
The broken line showing portions of the toilet are included for the purpose of illustrating a portion of the toilet that forms no part of the claimed design.