NVD3 (D3 JS) how to remove y2 axis

Question

I\'m trying to use the following example which is a line and bar chart combined.

NVD3 Line & Bar Chart combination

The problem I have is that I want the

Answer 1

Much like Lars' answer, this leaves a gap where the axis used to be, but I hid this with CSS.

.y2-axis {display: none}