Remove pylint warning from sensors

scripts/wk/hw/sensors.py

@@ -152,12 +152,11 @@ class Sensors():
       sleep(0.5)
 
   def save_average_temps(self, temp_label, seconds=10):
-    # pylint: disable=unused-variable
     """Save average temps under temp_label over provided seconds.."""
     self.clear_temps()
 
     # Get temps
-    for i in range(seconds):
+    for _ in range(seconds):
       self.update_sensor_data(exit_on_thermal_limit=False)
       sleep(1)