remove empty default parameters

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5800 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountModule_viewAccountList/listbox.xml

@@ -446,20 +446,7 @@
                 <item>
                     <key> <string>default_params</string> </key>
                     <value>
-                      <list>
-                        <tuple>
-                          <string>id</string>
-                          <string encoding="base64">Jyc=</string>
-                        </tuple>
-                        <tuple>
-                          <string>gap_title</string>
-                          <string encoding="base64">Jyc=</string>
-                        </tuple>
-                        <tuple>
-                          <string>title</string>
-                          <string encoding="base64">Jyc=</string>
-                        </tuple>
-                      </list>
+                      <list/>
                     </value>
                 </item>
                 <item>