Remove markdown-docbook

With the usage of openstack-doc-tools, markdown-docbook is not used
anymore, we can remove the script and the macro.

Change-Id: Id7375a50ee9183e0371c4089293b6515c9c0e240

modules/openstack_project/files/jenkins_job_builder/config/macros.yaml

@@ -40,11 +40,6 @@
     builders:
       - shell: "mvn package -B"
 
-- builder:
-    name: markdown-docbook
-    builders:
-      - shell: "/usr/local/jenkins/slave_scripts/markdown-docbook.sh {filename}"
-
 - builder:
     name: gerrit-package
     builders:

modules/openstack_project/files/slave_scripts/markdown-docbook.sh

@@ -1,21 +0,0 @@
-#!/bin/bash -ex
-
-# Documentation can be submitted in markdown and then converted to docbook
-# so it can be built with the maven plugin. This is used by Jenkins when
-# invoking certain docs jobs and the resulting output is made available to maven.
-
-# In case we start doing something more sophisticated with other refs
-# later (such as tags).
-BRANCH=$ZUUL_REFNAME
-shopt -s extglob
-
-# Need to get the file name to insert here so it can be reused for multiple projects
-# Filenames for the known repos that could do this are openstackapi-programming.mdown
-# and images-api-v2.0.md and openstackapi-programming and images-api-v2.0 are the names
-# for the ID and xml filename.
-FILENAME=$1
-FILEPATH=`find ./ -regextype posix-extended -regex ".*${FILENAME}\.(md|markdown|mdown)"`
-DIRPATH=`dirname $FILEPATH`
-pandoc -f markdown -t docbook -s ${FILEPATH} |  xsltproc -o - /usr/share/xml/docbook/stylesheet/docbook5/db4-upgrade.xsl - |  xmllint  --format - | sed -e "s,<article,<chapter xml:id=\"$FILENAME\"," | sed -e 's,</article>,</chapter>,' > ${DIRPATH}/$FILENAME.xml
-
-pwd