Remove whitespace in the drive subsystem class

[beccawilcox001]

Whitespace in code is a useful way to group things together, kind of like a paragraph in english. However, there shouldn't be multiple line breaks in a row. This causes the code to take up a lot more space and be more difficult to navigate.

Find spots in the drivetrain subsystem class that have too many blank lines. Remove this extra space, leaving just one extra line instead.