core: remove guard on edit workflow transition

edit method has security definition on the class, gard is not needed
here.
This cause compatibility issues, in the past it was not necessary to
have any permission to call edit from restricted code.

product/ERP5/bootstrap/erp5_core/WorkflowTemplateItem/portal_workflow/edit_workflow/transitions/edit.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>
@@ -55,30 +59,13 @@
         <item>
             <key> <string>var_exprs</string> </key>
             <value>
-              <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
             </value>
         </item>
       </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>
-  <record id="3" aka="AAAAAAAAAAM=">
     <pickle>
       <global name="PersistentMapping" module="Persistence.mapping"/>
     </pickle>
@@ -91,7 +78,7 @@
                 <item>
                     <key> <string>comment</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
                     </value>
                 </item>
               </dictionary>
@@ -100,7 +87,7 @@
       </dictionary>
     </pickle>
   </record>
-  <record id="4" aka="AAAAAAAAAAQ=">
+  <record id="3" aka="AAAAAAAAAAM=">
     <pickle>
       <global name="Expression" module="Products.CMFCore.Expression"/>
     </pickle>