slapos_cloud: drop source_administration on Computer Network

Only project is used now

master/bt5/slapos_cloud/PortalTypeBaseCategoryTemplateItem/base_category_list.xml

@@ -11,9 +11,6 @@
  <portal_type id="Computer Model">
   <item>source_administration</item>
  </portal_type>
- <portal_type id="Computer Network">
-  <item>source_administration</item>
- </portal_type>
  <portal_type id="Hosting Subscription Module">
   <item>business_application</item>
  </portal_type>

master/bt5/slapos_cloud/bt/template_portal_type_base_category_list

@@ -2,7 +2,6 @@ Allocation Supply Line | aggregate
 Allocation Supply Module | business_application
 Compute Node | destination_section
 Computer Model | source_administration
-Computer Network | source_administration
 Hosting Subscription Module | business_application
 Instance Node | specialise
 Instance Tree Module | business_application