some laneplanner updates (#2505)

selfdrive/controls/lib/lane_planner.py

@@ -52,7 +52,7 @@ def calc_d_poly(l_poly, r_poly, p_poly, l_prob, r_prob, lane_width, v_ego, l_std
   return lr_prob * d_poly_lane + (1.0 - lr_prob) * p_poly
 
 
-class LanePlanner():
+class LanePlanner:
   def __init__(self):
     self.l_poly = [0., 0., 0., 0.]
     self.r_poly = [0., 0., 0., 0.]
@@ -107,7 +107,3 @@ class LanePlanner():
                       (1 - self.lane_width_certainty) * speed_lane_width
 
     self.d_poly = calc_d_poly(self.l_poly, self.r_poly, self.p_poly, self.l_prob, self.r_prob, self.lane_width, v_ego, self.l_std, self.r_std)
-
-  def update(self, v_ego, md):
-    self.parse_model(md)
-    self.update_d_poly(v_ego)