The ornamental design for armour, as shown and described.
FIG. 1 is a front elevational view of our new design for armour;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a left side rear perspective view thereof;
FIG. 5 is a left side front perspective view thereof;
FIG. 6 is top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in the photographs are for the purposes of illustrating the person wearing the claimed armour design and form no part of the claimed design.