Build healthcheck on stable-3.1

Change-Id: If755fda45e7c06a64e928177d34972dac51e02a1
diff --git a/jenkins/gerrit-bazel-plugin-healthcheck.yaml b/jenkins/gerrit-bazel-plugin-healthcheck.yaml
index 9e6f4d5..ba7eb6b 100644
--- a/jenkins/gerrit-bazel-plugin-healthcheck.yaml
+++ b/jenkins/gerrit-bazel-plugin-healthcheck.yaml
@@ -1,13 +1,9 @@
 - project:
     name: healthcheck
     jobs:
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
-            - master
-            - stable-3.1
       - 'plugin-{name}-bazel-{branch}':
           branch:
+            - master
+            - stable-3.1
             - stable-3.0
             - stable-2.16