Remove cli-shutdown.groovy, as it is no longer necessary in newer Jenkins versions

Change-Id: I9c09142e4de1b837d20f5eed73b69291059371a7
diff --git a/jenkins/config/init.groovy.d/cli-shutdown.groovy b/jenkins/config/init.groovy.d/cli-shutdown.groovy
deleted file mode 100644
index b8cb30d..0000000
--- a/jenkins/config/init.groovy.d/cli-shutdown.groovy
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
-The MIT License
-
-Copyright (c) 2015, Kohsuke Kawaguchi
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-import jenkins.*;
-import jenkins.model.*;
-import hudson.model.*;
-
-// disabled CLI access over TCP listener (separate port)
-def p = AgentProtocol.all()
-p.each { x ->
-  if (x.name.contains("CLI")) p.remove(x)
-}
-
-// disable CLI access over /cli URL
-def removal = { lst ->
-  lst.each { x -> if (x.getClass().name.contains("CLIAction")) lst.remove(x) }
-}
-def j = Jenkins.instance;
-removal(j.getExtensionList(RootAction.class))
-removal(j.actions)
-