Many unnecessary prints when calling spike_distance

[thomastiotto]

When calling the spike_distance() function I'm getting a ton of unnecessary prints to stdout as can be seen in the following:

I traced back part of the issue to line 157, 169, and 171 of PieceWiseLinFunc.py where we can see the print statements

I manually commented these lines out and all unnecessary prints disappeared.

I have a feeling these prints were there for debug and were forgotten, as I can't see a reason to have them.

[thomaskreuz]

Issue has been resolved.