[execution][base] Code cleanup

beat/core/execution/base.py

@@ -44,14 +44,9 @@ Execution utilities
 
 
 import os
-import sys
 import glob
 import collections
-
 import logging
-
-logger = logging.getLogger(__name__)
-
 import simplejson
 
 from .. import schema
@@ -62,6 +57,9 @@ from .. import stats
 from beat.backend.python.helpers import convert_experiment_configuration_to_container
 
 
+logger = logging.getLogger(__name__)
+
+
 class BaseExecutor(object):
     """Executors runs the code given an execution block information