Fix UI timing test (#36823)

* why did no one tell me about this?!

* not necessary

selfdrive/test/test_onroad.py

@@ -206,8 +206,9 @@ class TestOnroad:
     result += "-------------- UI Draw Timing ------------------\n"
     result += "------------------------------------------------\n"
 
-    # skip first few frames -- connecting to vipc
-    ts = self.ts['uiDebug']['drawTimeMillis'][15:]
+    # other processes preempt ui while starting up
+    offset = int(20 * LOG_OFFSET)
+    ts = self.ts['uiDebug']['drawTimeMillis'][offset:]
     result += f"min  {min(ts):.2f}ms\n"
     result += f"max  {max(ts):.2f}ms\n"
     result += f"std  {np.std(ts):.2f}ms\n"

selfdrive/ui/mici/onroad/cameraview.py

@@ -107,7 +107,6 @@ else:
 class CameraView(Widget):
   def __init__(self, name: str, stream_type: VisionStreamType):
     super().__init__()
-    # TODO: implement a receiver and connect thread
     self._name = name
     # Primary stream
     self.client = VisionIpcClient(name, stream_type, conflate=True)

selfdrive/ui/onroad/cameraview.py

@@ -68,7 +68,6 @@ else:
 class CameraView(Widget):
   def __init__(self, name: str, stream_type: VisionStreamType):
     super().__init__()
-    # TODO: implement a receiver and connect thread
     self._name = name
     # Primary stream
     self.client = VisionIpcClient(name, stream_type, conflate=True)