public void removeMargins() {
        bubbleChartRenderer.removeMargins();
        ViewCompat.postInvalidateOnAnimation(this);
    }
Removes empty spaces, top-bottom for portrait orientation and left-right for landscape. This method has to be
called after view View#onSizeChanged() method is called and chart data is set. This method may be inaccurate.

@see BubbleChartRenderer#removeMargins()
hellocharts-library/src/lecho/lib/hellocharts/view/BubbleChartView.java