optimize imports and cleanup code

detector.py

@@ -1,17 +1,8 @@
 import logging
 _log=logging.getLogger(__name__)
 
-#from glob import glob
-
 from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot
 
-#import eventer
-#import qsingleton
-#from detector_integration_api import DetectorIntegrationClient
-#from app_config import settings, appsconf, simulated
-#config = appsconf['jungfrau']
-#dia_client = DetectorIntegrationClient(config['uri'])
-
 class JungfrauWaiter(QObject):
   finished = pyqtSignal()
 
@@ -22,9 +13,11 @@ class JungfrauWaiter(QObject):
   def work(self):
     pass
 
+
 class JungfrauMissingConfiguration(Exception):
   pass
 
+
 class Jungfrau(QObject):
   pedestal_selected = pyqtSignal(str)
   configured = pyqtSignal()