Build websession-broker on stable-3.14

Change-Id: I786c67519d015bd9bfa80a3918fd4592a1a1afa8
diff --git a/jenkins/gerrit-bazel-plugin-websession-broker.yaml b/jenkins/gerrit-bazel-plugin-websession-broker.yaml
index f0db7af..a170b74 100644
--- a/jenkins/gerrit-bazel-plugin-websession-broker.yaml
+++ b/jenkins/gerrit-bazel-plugin-websession-broker.yaml
@@ -10,9 +10,5 @@
       - 'plugin-{name}-gh-bazel-{branch}':
           branch:
             - master
-            - stable-3.13
-      - 'plugin-{name}-gh-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
             - stable-3.14
+            - stable-3.13