core: don't set guard on edit_action

This action is typically used to add notes in history in scripts,
including in cases where user does not have modify portal content
permission on the document.

product/ERP5/bootstrap/erp5_core/WorkflowTemplateItem/portal_workflow/edit_workflow/transitions/edit_action.xml

@@ -10,6 +10,10 @@
             <key> <string>actbox_category</string> </key>
             <value> <string>workflow</string> </value>
         </item>
+        <item>
+            <key> <string>actbox_icon</string> </key>
+            <value> <string></string> </value>
+        </item>
         <item>
             <key> <string>actbox_name</string> </key>
             <value> <string></string> </value>
@@ -29,7 +33,7 @@
         <item>
             <key> <string>guard</string> </key>
             <value>
-              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+              <none/>
             </value>
         </item>
         <item>
@@ -55,21 +59,4 @@
       </dictionary>
     </pickle>
   </record>
-  <record id="2" aka="AAAAAAAAAAI=">
-    <pickle>
-      <global name="Guard" module="Products.DCWorkflow.Guard"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>permissions</string> </key>
-            <value>
-              <tuple>
-                <string>Modify portal content</string>
-              </tuple>
-            </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
 </ZopeData>