Fix duplicate newlines at the end of files

integrationtests/python_src/px4_it/util/manual_input.py

@@ -166,4 +166,3 @@ class ManualInput(object):
             self.pub_mcsp.publish(pos)
             rate.sleep()
             count = count + 1
-

integrationtests/python_src/px4_it/util/px4_test_helper.py

@@ -108,4 +108,3 @@ class PX4TestHelper(object):
                 rospy.logwarn("Trying to write to bag but it's already closed")
         finally:
             self.condition.release()
-