fixing lint errors

Author: Dilmi Wickramanayake

examples/nidaqmx/nidaqmx_analog_input_filtering/nidaqmx_analog_input_filtering.py

@@ -43,7 +43,7 @@
     while True:
         while not panel.get_value("run_button", False):
             panel.set_value("is_running", False)
-            # time.sleep(0.1)
+            time.sleep(0.1)
         panel.set_value("is_running", True)
         panel.set_value("stop_button", False)