ERP5Workflow: fix destination list requirement

it should not be required to have destination list on a state

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/State_view/my_destination_list.xml

@@ -219,7 +219,7 @@
                 </item>
                 <item>
                     <key> <string>required</string> </key>
-                    <value> <int>1</int> </value>
+                    <value> <int>0</int> </value>
                 </item>
                 <item>
                     <key> <string>title</string> </key>
@@ -233,8 +233,7 @@
                     <key> <string>view_separator</string> </key>
                     <value> <string encoding="cdata"><![CDATA[
 
-<br />\n
-
+<br />
 
 ]]></string> </value>
                 </item>