Removed icon. Use standard icon.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14419 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_base/PortalTypeTemplateItem/portal_types/Career.xml

@@ -60,7 +60,7 @@
         </item>
         <item>
             <key> <string>content_icon</string> </key>
-            <value> <string>order_icon.gif</string> </value>
+            <value> <string></string> </value>
         </item>
         <item>
             <key> <string>content_meta_type</string> </key>