[install-guide] Unlink trove and sahara content

Unlinking trove and sahara content from installation guide due
to recurring functionality issues. Leaving content files for
potential future restoration.

Change-Id: I6e873871434982499476ca22d24f80cd746e18ca
Closes-Bug: #1464228

doc/install-guide/bk-openstack-install-guide.xml

@@ -242,8 +242,6 @@
     <xi:include href="ch_swift.xml"/>
     <xi:include href="ch_heat.xml"/>
     <xi:include href="ch_ceilometer.xml"/>
-    <xi:include href="ch_trove.xml"/>
-    <xi:include href="ch_sahara.xml"/>
     <xi:include href="ch_launch-instance.xml"/>
     <xi:include href="app_reserved_uids.xml"/>
     <xi:include href="../common/app_support.xml"/>