The ornamental design for a grillcleaningtool, as shown and described.
FIG. 1 is a front perspective view of a grill cleaning tool showing our new design;
FIG. 2 is front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines in FIGS. 1 to 6 show a loop of rope and an opening in the handle of the grill cleaning tool for receiving the loop of rope, both of which form no part of the claimed design.