Clear repo_refs for new round of testing

repo_refs.yaml

@@ -25,30 +25,3 @@ repos:
     - tripleo-ci
 
 gerrit_refs:
-    tripleo-incubator:
-        # Allow overcloud fixed range to be configurable
-        - 26/97626/2
-
-    tripleo-image-elements:
-        # Increase the Ironic RPC connection pool size.
-        # https://review.openstack.org/#/c/93844/
-        - 44/93844/4
-
-
-    ironic:
-        # Allow more time for API requests to be completed
-        # https://review.openstack.org/#/c/93731/
-        - 31/93731/4
-
-        # Set instance default_ephemeral_device
-        # https://review.openstack.org/#/c/96498/
-        - 98/96498/10
-
-        # Work around iscsiadm delete failures.
-        # https://review.openstack.org/#/c/96577/
-        - 77/96577/3
-
-    diskimage-builder:
-        # Add new cloud-init-datasources element
-        # https://review.openstack.org/#/c/95598/
-        - 98/95598/3