Make the account plugin build on Gerrit master

Change-Id: Ifb5a26d5b3ce6ca7640c4b6800fda75bc7a51426
diff --git a/jenkins/gerrit-bazel-build-account-plugin.sh b/jenkins/gerrit-bazel-build-account-plugin.sh
index 1a06316..0554f50 100644
--- a/jenkins/gerrit-bazel-build-account-plugin.sh
+++ b/jenkins/gerrit-bazel-build-account-plugin.sh
@@ -1,14 +1,6 @@
 #!/bin/bash -e
 
-case {branch} in
-  master|stable-3.9|stable-3.10)
-    . set-java.sh 17
-    ;;
-
-  *)
-    . set-java.sh 11
-    ;;
-esac
+. set-java.sh 21
 
 git checkout -f -b gerrit-{branch}  gerrit/{branch}
 git submodule update --init
diff --git a/jenkins/gerrit-bazel-plugin-account.yaml b/jenkins/gerrit-bazel-plugin-account.yaml
index 7671fc1..e0c3bf5 100644
--- a/jenkins/gerrit-bazel-plugin-account.yaml
+++ b/jenkins/gerrit-bazel-plugin-account.yaml
@@ -42,4 +42,3 @@
       - 'plugin-account-bazel-{branch}':
           branch:
             - master
-            - stable-3.8