Revert "Temporary add feature pragma"

This reverts commit 6843bc798c3fe5f17286e1c07ede95171bb49a25.

Reason for revert: not sure why but this end up disabling the integration job on check pipeline,

Change-Id: Icfaf8ea17b3ce2e405414c23f8075b18d297bf8b
example: latest recheck on PS12 check pipeline job for neutron - https://review.opendev.org/c/openstack/neutron/+/790060
diff --git a/.zuul.yaml b/.zuul.yaml
index 9a675c6..00129b5 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,10 +1,3 @@
-- pragma:
-   # NOTE(gtema): this is required for the changes in SDK feature/r1 branch to
-   # be using devstack
-   # TODO(gtema): delete this once r1 branch is merged into master
-    implied-branches:
-      - feature/r1
-
 - nodeset:
     name: openstack-single-node
     nodes: