try to reduce fixes

test/test_modules/test_pre_processing.py

@@ -31,7 +31,6 @@ class TestPreProcessing:
 
     @pytest.fixture
     def obj_with_exp_setup(self):
-        RunEnvironment()
         ExperimentSetup(parser_args={}, stations=['DEBW107', 'DEBY081', 'DEBW013', 'DEBW076', 'DEBW087', 'DEBW001'],
                         var_all_dict={'o3': 'dma8eu', 'temp': 'maximum'}, station_type="background")
         pre = object.__new__(PreProcessing)
@@ -43,8 +42,7 @@ class TestPreProcessing:
         ExperimentSetup(parser_args={}, stations=['DEBW107', 'DEBY081', 'DEBW013', 'DEBW076', 'DEBW087'],
                         var_all_dict={'o3': 'dma8eu', 'temp': 'maximum'})
         caplog.set_level(logging.INFO)
-        with PreProcessing():
-            time.sleep(0.1)  # sometimes the destruction logging is delayed during CI testing, so wait a little
+        PreProcessing()
         assert caplog.record_tuples[0] == ('root', 20, 'PreProcessing started')
         assert caplog.record_tuples[1] == ('root', 20, 'check valid stations started')
         assert caplog.record_tuples[-1] == ('root', 20, PyTestRegex(r'run for \d+\.\d+s to check 5 station\(s\). Found '