[config-ref] remove common content

To avoid complexity and focus role as a reference.

Change-Id: I26de569ad63dea580ec651d3fc10198b118cf622

doc/config-reference/source/common

@@ -1 +0,0 @@
-../../common

doc/config-reference/source/conf.py

@@ -95,8 +95,7 @@ html_context = {"gitsha": gitsha, "bug_tag": bug_tag,
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['common/cli*', 'common/nova*', 'common/get-started-*',
-                    'tables/*.rst', 'tables/manual/*.rst']
+exclude_patterns = ['tables/*.rst', 'tables/manual/*.rst']
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.

doc/config-reference/source/config-overview.rst

@@ -5,7 +5,6 @@ OpenStack configuration overview
 .. toctree::
    :maxdepth: 1
 
-   common/conventions.rst
    config-format.rst
    mutable.rst
 

doc/config-reference/source/index.rst

@@ -43,16 +43,6 @@ Appendix
    :maxdepth: 1
 
    policy-json-file.rst
-   common/app-support.rst
-
-Glossary
-~~~~~~~~
-
-.. toctree::
-   :maxdepth: 1
-
-   common/glossary.rst
-
 
 Search in this guide
 ~~~~~~~~~~~~~~~~~~~~