Revert "Add shared network for tempest testing"

This reverts commit 486879b995c32325cbc6acae364222a06412512d.

Related-prod: PROD-29645, PROD-29648

Change-Id: Ifff797a75d644faf1e25f8be9cfd91df67cf745a
diff --git a/_modules/runtest/tempest_sections/compute.py b/_modules/runtest/tempest_sections/compute.py
index 62cd318..d131018 100644
--- a/_modules/runtest/tempest_sections/compute.py
+++ b/_modules/runtest/tempest_sections/compute.py
@@ -77,8 +77,7 @@
         fixed_network_name = self.get_item_when_condition_match('ironic.conductor.neutron.provisioning_network', c)
         if fixed_network_name:
             return fixed_network_name
-        else:
-            return 'tempest-net'
+        return
 
     @property
     def flavor_ref(self):
diff --git a/metadata/service/tempest/init.yml b/metadata/service/tempest/init.yml
index f369c09..e4f0dab 100644
--- a/metadata/service/tempest/init.yml
+++ b/metadata/service/tempest/init.yml
@@ -3,7 +3,6 @@
   - service.runtest.tempest.glance
   - service.runtest.tempest.nova
   - service.runtest.tempest.heat
-  - service.runtest.tempest.tempest_net
 applications:
   - runtest
 parameters:
diff --git a/metadata/service/tempest/tempest_net.yml b/metadata/service/tempest/tempest_net.yml
deleted file mode 100644
index f140a54..0000000
--- a/metadata/service/tempest/tempest_net.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-parameters:
-  neutron:
-    client:
-      enabled: true
-      server:
-        admin_identity:
-          network:
-            tempest-net:
-              tenant: admin
-              shared: True
-              router_external: False
-              admin_state_up: True
-              subnet:
-                tempest-subnet:
-                  cidr: 10.20.40.0/24
-                  allocation_pools:
-                    - start: 10.20.40.10
-                      end: 10.20.40.254
-                  gateway: 10.20.40.1
-                  enable_dhcp: True
\ No newline at end of file