Build multi-site against 3.7 branch

Change-Id: Iea9c01e2a630e631bade1f866b7fb4713cbd6296
diff --git a/jenkins/gerrit-bazel-plugin-multi-site.yaml b/jenkins/gerrit-bazel-plugin-multi-site.yaml
index 0130e34..2bcde81 100644
--- a/jenkins/gerrit-bazel-plugin-multi-site.yaml
+++ b/jenkins/gerrit-bazel-plugin-multi-site.yaml
@@ -1,14 +1,10 @@
 - project:
     name: multi-site
     jobs:
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
-            - stable-3.7
       - 'plugin-{name}-bazel-{branch}':
           branch:
             - master
             - stable-3.5
             - stable-3.6
+            - stable-3.7
       - 'plugin-{name}-verifier'