slapos_cloud: drop source_administration from Compute Node

master/bt5/slapos_cloud/PortalTypeBaseCategoryTemplateItem/base_category_list.xml

@@ -2,7 +2,6 @@
  <portal_type id="Compute Node">
   <item>destination_section</item>
   <item>follow_up</item>
-  <item>source_administration</item>
  </portal_type>
  <portal_type id="Computer Model">
   <item>source_administration</item>

master/bt5/slapos_cloud/bt/template_portal_type_base_category_list

 Compute Node | destination_section
 Compute Node | follow_up
-Compute Node | source_administration
 Computer Model | source_administration
 Computer Network | source_administration
 Hosting Subscription Module | business_application