code: public void removeBorder(int bordersToRemove) {
          if((bordersToRemove & Rectangle.LEFT) == Rectangle.LEFT) {
              this.borders.remove(Integer.valueOf(RtfBorder.LEFT_BORDER));
          }
          if((bordersToRemove & Rectangle.TOP) == Rectangle.TOP) {
              this.borders.remove(Integer.valueOf(RtfBorder.TOP_BORDER));
          }
          if((bordersToRemove & Rectangle.RIGHT) == Rectangle.RIGHT) {
              this.borders.remove(Integer.valueOf(RtfBorder.RIGHT_BORDER));
          }
          if((bordersToRemove & Rectangle.BOTTOM) == Rectangle.BOTTOM) {
              this.borders.remove(Integer.valueOf(RtfBorder.BOTTOM_BORDER));
          }
          if((bordersToRemove & Rectangle.BOX) == Rectangle.BOX && this.borderType == RtfBorder.ROW_BORDER) {
              this.borders.remove(Integer.valueOf(RtfBorder.VERTICAL_BORDER));
              this.borders.remove(Integer.valueOf(RtfBorder.HORIZONTAL_BORDER));
          }
      }
docs: Removes borders from the list of borders
  
  @param bordersToRemove The borders to remove (from Rectangle)