Remove some templated variables that were only set and used once.

Change-Id: I4635cb2ae419bc2ab70b18073b83b18bf2a38af1
diff --git a/jenkins/BUILD b/jenkins/BUILD
index b8f1223..0223234 100644
--- a/jenkins/BUILD
+++ b/jenkins/BUILD
@@ -234,9 +234,6 @@
         "//jenkins/jobs",
         ":maintenance/gerrit-verifier",
     ],
-    substitutions = {
-        "PUBLIC_JENKINS_URL": "https://ci.bazel.build/",
-    },
     tars = ["//jenkins/lib"],
     visibility = ["//visibility:public"],
 )
diff --git a/jenkins/build_defs/vars.bzl b/jenkins/build_defs/vars.bzl
index 5d4fe3b..3203bf3 100644
--- a/jenkins/build_defs/vars.bzl
+++ b/jenkins/build_defs/vars.bzl
@@ -17,5 +17,4 @@
 MAIL_SUBSTITUTIONS = {
     "BAZEL_BUILD_RECIPIENT": "bazel-ci@googlegroups.com",
     "BAZEL_RELEASE_RECIPIENT": "bazel-discuss+release@googlegroups.com",
-    "SENDER_EMAIL": "noreply@bazel.build",
 }
diff --git a/jenkins/config/jenkins.model.JenkinsLocationConfiguration.xml.tpl b/jenkins/config/jenkins.model.JenkinsLocationConfiguration.xml.tpl
index 241d772..6482442 100644
--- a/jenkins/config/jenkins.model.JenkinsLocationConfiguration.xml.tpl
+++ b/jenkins/config/jenkins.model.JenkinsLocationConfiguration.xml.tpl
@@ -1,13 +1,13 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <!--
   Copyright 2015 The Bazel Authors. All rights reserved.
- 
+
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
- 
+
      http://www.apache.org/licenses/LICENSE-2.0
- 
+
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -15,6 +15,6 @@
   limitations under the License.
 -->
 <jenkins.model.JenkinsLocationConfiguration>
-  <adminAddress>Bazel Jenkins CI server &lt;{{ variables.SENDER_EMAIL }}&gt;</adminAddress>
-  <jenkinsUrl>{{ variables.PUBLIC_JENKINS_URL }}</jenkinsUrl>
+  <adminAddress>Bazel Jenkins CI server &lt;noreply@bazel.build&gt;</adminAddress>
+  <jenkinsUrl>https://ci.bazel.build/</jenkinsUrl>
 </jenkins.model.JenkinsLocationConfiguration>