The ornamental design for a laundrydevice, as shown and described.
FIG. 1 is a top front side perspective view of a laundry device, showing my new design;
FIG. 2 is a front side elevation view thereof with the rear side elevation view, right side elevation view and left side elevation view being identical;
FIG. 3 is a top side plan view thereof;
FIG. 4 is a bottom side plan view thereof; and,
FIG. 5 is a bottom front side perspective view thereof.