The ornamental design for a shavingdevice, as shown and described.
FIG. 1 is a front perspective view of the shaving device of the present invention showing my new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a back side elevational view thereof;
FIG. 4 is a side elevational view thereof;
FIG. 5 is another side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line disclosure of the shaving blades and interior handle illustrate portions of the shaving device. The remaining broken lines that have surface shading up to the broken lines illustrate the bounds of the claim. None of the broken lines forms part of the claimed design.