code: function removeShape(shape) {
           me.utils.array.remove(this.shapes, shape); // update the body bounds to take in account the removed shape
  
           this.updateBounds(); // return the length of the shape list
  
           return this.shapes.length;
         }
docs: remove the specified shape from the body shape list
  @name removeShape
  @memberOf me.Body
  @public
  @function
  @param {me.Polygon|me.Line|me.Ellipse} shape a shape object
  @return {Number} the shape array length