revert part of r43243. This form does not exists

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43244 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_web_ung_theme/PathTemplateItem/web_site_module/ung/mail.xml

@@ -77,7 +77,7 @@
         </item>
         <item>
             <key> <string>content_layout</string> </key>
-            <value> <string>erp5_web_ung_mail_content_layout</string> </value>
+            <value> <string>erp5_web_ung_content_layout</string> </value>
         </item>
         <item>
             <key> <string>description</string> </key>

bt5/erp5_web_ung_theme/bt/revision

-245
\ No newline at end of file
+246
\ No newline at end of file