erp5_ingestion: Remove parameter not used

bt5/erp5_ingestion/SkinTemplateItem/portal_skins/erp5_ingestion/Base_contribute.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>file=None, url=None, portal_type=None, classification=None, synchronous_metadata_discovery=None, redirect_to_document=None, attach_document_to_context=False, use_context_for_container=False, redirect_url=None, redirect_to_context=False, cancel_url=None, batch_mode=False, max_repeat=0, editable_mode = 1, follow_up_list=None, user_login=None, group=None, publication_section=None, extra_document_kw={}, **kw</string> </value>
+            <value> <string>file=None, url=None, portal_type=None, classification=None, synchronous_metadata_discovery=None, redirect_to_document=None, attach_document_to_context=False, use_context_for_container=False, redirect_url=None, redirect_to_context=False, cancel_url=None, batch_mode=False, max_repeat=0, editable_mode = 1, follow_up_list=None, user_login=None, group=None, publication_section=None, **kw</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>