Remove ;s from Python code

They keep getting copied around too...

Change-Id: I6562dc4d377e5e6d85e9b21cdb3d87b432c77d43
diff --git a/y2015/control_loops/python/elevator.py b/y2015/control_loops/python/elevator.py
index fba72c8..89e16cd 100755
--- a/y2015/control_loops/python/elevator.py
+++ b/y2015/control_loops/python/elevator.py
@@ -77,7 +77,7 @@
 
     print self.A
 
-    controlability = controls.ctrb(self.A, self.B);
+    controlability = controls.ctrb(self.A, self.B)
     print "Rank of augmented controlability matrix.", numpy.linalg.matrix_rank(
         controlability)