Fix Mendota Buoy Wind Speed knots being converted twice

A user pointed out that the tick labels on the y-axis didn't represent the data properly. It looks like I thought the data was in m/s so I was converting it to knots, but the data actually starts in knots so this isn't needed.

added Bug label

merged

mentioned in commit 56cee8fb

Nope. I was wrong. They are in m/s and do need to be converted to knots.

mentioned in merge request !20 (merged)