I claim the ornamental design for a removable collar for footwear, as shown and described.
FIG. 1 is a front perspective view of the removable collar for footwear showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof.
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a front perspective view of the removable collar for footwear shown in FIG. 1 in use; and,
FIG. 9 is a rear perspective view of the removable collar for footwear shown in FIG. 1 in use.
The broken lines showing a hummingbird, flowers, and a boot illustrate environment and form no part of the claimed design. The dotted lines forming squares in the rear view of FIG. 3 represent stitching and form no part of the claimed design.