I claim the ornamental design for a cleaning tool, as shown and described.
FIG. 1 is a perspective view of a cleaning tool;
FIG. 2 is a front plan view of the design of FIG. 1;
FIG. 3 is a rear plan view of the design of FIG. 1;
FIG. 4 is a right side plan view of the design of FIG. 1;
FIG. 5 is a left side plan view of the design of FIG. 1;
FIG. 6 is a top plan view of the design of FIG. 1; and,
FIG. 7 is a bottom plan view of the design of FIG. 1.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines illustrating a supporting structure in FIG. 1 are for the purpose of illustrating environmental structure only, and form no part of the claimed design. The cleaning tool is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The areas of the body shown in broken lines in FIG. 3 illustrate portions of the cleaning tool that form no part of the claimed design.