prevent '''SearchKey "range" and "operator" are mutualy exclusive, ignoring operator''' warning

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27276 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Tool/SimulationTool.py

@@ -512,7 +512,7 @@ class SimulationTool(BaseTool):
       column_value_dict = DictMixIn()
 
       if omit_mirror_date:
-        date_dict = {'query':[], 'operator':'and'}
+        date_dict = {'query':[], }
         if from_date :
           date_dict['query'].append(from_date)
           date_dict['range'] = 'min'