crm: do not display the preferred value in preference field

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/SystemPreference_viewCustomerRelation/my_preferred_event_sender_email.xml

@@ -118,9 +118,7 @@
                 </item>
                 <item>
                     <key> <string>default</string> </key>
-                    <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
-                    </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>description</string> </key>
@@ -154,6 +152,10 @@
                     <key> <string>hidden</string> </key>
                     <value> <string></string> </value>
                 </item>
+                <item>
+                    <key> <string>input_type</string> </key>
+                    <value> <string></string> </value>
+                </item>
                 <item>
                     <key> <string>max_length</string> </key>
                     <value> <string></string> </value>
@@ -259,20 +261,4 @@
       </dictionary>
     </pickle>
   </record>
-  <record id="2" aka="AAAAAAAAAAI=">
-    <pickle>
-      <tuple>
-        <global name="TALESMethod" module="Products.Formulator.TALESField"/>
-        <tuple/>
-      </tuple>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_text</string> </key>
-            <value> <string>python: here.getPreferredEventSenderEmail() or preferences.getPreferredEventSenderEmail()</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
 </ZopeData>

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/SystemPreference_viewCustomerRelation/my_preferred_meeting_resource_list.xml

@@ -134,9 +134,7 @@
                 </item>
                 <item>
                     <key> <string>default</string> </key>
-                    <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
-                    </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>description</string> </key>
@@ -149,7 +147,7 @@
                 <item>
                     <key> <string>enabled</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
                     </value>
                 </item>
                 <item>
@@ -300,19 +298,6 @@
     </pickle>
   </record>
   <record id="2" aka="AAAAAAAAAAI=">
-    <pickle>
-      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_text</string> </key>
-            <value> <string>python: here.getPreferredMeetingResourceList() or preferences.getPreferredMeetingResourceList()</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-  <record id="3" aka="AAAAAAAAAAM=">
     <pickle>
       <global name="TALESMethod" module="Products.Formulator.TALESField"/>
     </pickle>