Fix logging for clock noise generation

lisainstrument/instrument.py

@@ -861,7 +861,7 @@ class Instrument:
 
         ## Clock noise
 
-        logging.info("Generating clock noise time series")
+        logger.info("Generating clock noise time series")
 
         if self.clock_freqlindrifts == self.clock_freqquaddrifts == 0:
             # Optimize to use a scalar if we only have a constant frequency offset