Removed unused argparse

Change-Id: If0d947878c9f5f139007a091898f3661852bf220
diff --git a/y2016/control_loops/python/drivetrain.py b/y2016/control_loops/python/drivetrain.py
index 83eb677..db8388b 100755
--- a/y2016/control_loops/python/drivetrain.py
+++ b/y2016/control_loops/python/drivetrain.py
@@ -4,7 +4,6 @@
 from frc971.control_loops.python import controls
 import numpy
 import sys
-import argparse
 from matplotlib import pylab
 
 import gflags