Remove undefined external validator

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@23284 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_item/SkinTemplateItem/portal_skins/erp5_item/Item_view/my_reference.xml

@@ -82,9 +82,7 @@
                 </item>
                 <item>
                     <key>                 <string>external_validator</string> </key>
-                    <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
-                    </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
@@ -108,20 +106,4 @@
       </dictionary>
     </pickle>
   </record>
-  <record id="2" aka="AAAAAAAAAAI=">
-    <pickle>
-      <tuple>
-        <global name="Method" module="Products.Formulator.MethodField"/>
-        <tuple/>
-      </tuple>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>method_name</string> </key>
-            <value> <string>Material_validateReference</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
 </ZopeData>

bt5/erp5_item/bt/revision

-52
\ No newline at end of file
+53
\ No newline at end of file