Build audit-ls4j against stable-1{2,3,4}

audit-sl4j plugin master branch has been migrated to bazelmod with
change I5006c70319, so it is no longer compatibile with Gerrit
stable-3.12. stable-3.13 and stable-3.14.

Change-Id: If270946039d8bc21e8f7e4894bfe4835e9e4d106

jenkins/gerrit-bazel-plugin-audit-sl4j.yaml

diff --git a/jenkins/gerrit-bazel-plugin-audit-sl4j.yaml b/jenkins/gerrit-bazel-plugin-audit-sl4j.yaml
index 1e38405..b40a182 100644
--- a/jenkins/gerrit-bazel-plugin-audit-sl4j.yaml
+++ b/jenkins/gerrit-bazel-plugin-audit-sl4j.yaml
@@ -6,9 +6,6 @@
       - 'plugin-{name}-gh-bazel-{branch}':
           branch:
             - master
-      - 'plugin-{name}-gh-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
             - stable-3.14
             - stable-3.13
+            - stable-3.12