Remove installation.rst

- Remove installation.rst as the information has been superceeded
  by devstackGSG.rst and GSG.rst.

Change-Id: Iefcb16d4a657ba591e1e20e8cff8d31a6fd47c34
Closes-Bug: #1568178

doc/source/installation.rst

@@ -1,42 +0,0 @@
-============
-Installation
-============
-
-At the command line::
-
-   - Run stack.sh with local.conf configured for ceilometer.
-
-   - Configure the Openstack plugin - for more information see the file example.conf
-     default configuration place is in /etc/collectd.d/collectd-ceilometer-plugin.conf
-
-   - Enable some read plugins to get some stats in /etc/collectd.conf
-
-   - $ sudo service collectd start
-
-Manual install::
-    
-   - Run stack.sh with local.conf configured for ceilometer.
-
-   - git clone https://github.com/openstack/collectd-ceilometer-plugin.git
-
-   - Enable Python plugin in /etc/collectd.conf
-
-        <LoadPlugin python>
-          Globals true
-        </LoadPlugin>
-
-   - Enable the Openstack plugin in collectd configuration file:
-     (use example.conf)
-
-        <Plugin python>
-           ModulePath "/path/to/your/pyton/modules"
-           LogTraces true
-           Interactive false
-           Import "collectd_openstack_plugin"
-        </Plugin>
-
-   - Configure the Openstack plugin - for more information see the file example.conf
-
-   - Enable some read plugins to get some stats
-
-   - $ sudo service collectd start