Removes the tracking rectangle identified by a tag.
Original signature is '- (void)removeTrackingRect:(NSTrackingRectTag)aTag'
Available in Mac OS X v10.0 and later.


- aTag (NSInteger)
- An integer value identifying a tracking rectangle. It was returned by a previously sent addTrackingRect:owner:userData:assumeInside: message.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)