We claim the ornamental design for a cleaning device, as shown and described.
FIG. 1 is a perspective view of a cleaning device showing our new design;
FIG. 2 is a front elevational view of the cleaning device of FIG. 1;
FIG. 3 is a rear elevational view of the cleaning device of FIG. 1;
FIG. 4 is a right side elevational view of the cleaning device of FIG. 1;
FIG. 5 is a left side elevational view of the cleaning device of FIG. 1;
FIG. 6 is a top plan view of the cleaning device of FIG. 1; and,
FIG. 7 is a bottom plan view of the cleaning device of FIG. 1.
The broken line showing of a handle and other details in FIGS. 1–7 is included for the purpose of showing environmental portions of the cleaning device and forms no part of the claimed design.