The ornamental design for a removableprivacy covering for an umbrella, as shown and described.
FIG. 1 is a top view thereof; and
FIG. 2 is a left side view thereof; and
FIG. 3 is a right side view thereof; and
FIG. 4 is a frontal perspective view thereof wherein the opening is in a closed position; and,
FIG. 5 is a front view thereof wherein the opening is in an open position.
The broken lines showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.