remove unused variable and import

bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/ERP5Site_createDataAnalysisList.py

-from DateTime import DateTime
 from Products.ZSQLCatalog.SQLCatalog import AndQuery, OrQuery, Query
 
 portal = context.getPortalObject()
 portal_catalog = portal.portal_catalog
 
-now = DateTime()
-
 if not include_delivered:
   batch_simulation_state = "stopped"
   stream_simulation_state = "started"