NAME
    RemBob -- Macro to remove a bob from the gel list.
SYNOPSIS
    RemBob(bob)
    RemBob(struct bob *);
FUNCTION
    Marks a bob as no-longer-required.  the gels internal code then
    removes the bob from the list of active gels the next time
    drawglist is executed. this is implemented as a macro.
    If the user is double-buffering the bob, it could take two
    calls to drawglist before the bob actually disappears from
    the rastport.
INPUTS
    bob = pointer to the bob to be removed
RESULT
BUGS
SEE ALSO
    remibob()  drawglist()  graphics/gels.h  graphics/gfxmacros.h