LGTM fixes (#1480)

old-commit-hash: 008700a6b39c3fefe1233fca9adf85cb3413b5b8

tools/sim/lib/can.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 import cereal.messaging as messaging
-from opendbc.can.parser import CANParser
+#from opendbc.can.parser import CANParser
 from opendbc.can.packer import CANPacker
 from selfdrive.boardd.boardd_api_impl import can_list_to_can_capnp
 from selfdrive.car.honda.values import FINGERPRINTS, CAR

tools/sim/lib/helpers.py

@@ -1,5 +1,3 @@
-import numpy as np
-
 class FakeSteeringWheel():
   def __init__(self, dt=0.01):
     # physical params
@@ -13,7 +11,7 @@ class FakeSteeringWheel():
 
     self.angle = 0. # start centered
     # self.omega = 0.
-    
+
   def response(self, torque, vego=0):
     exerted_torque = torque * self.DAC
     # centering_torque = np.clip(-(self.centering_k * self.angle), -1.1, 1.1)