docs: remove outdated glossary

internal glossary not update more 5 years and all information already available in global glossry

Change-Id: I39cc8dd8c375ebaf48044ac943d0cbb62f6d2f75
Signed-off-by: Ivan Anfimov <lazekteam@gmail.com>

doc/source/contributor/intro.rst

@@ -43,7 +43,6 @@ left "Extensible" and "Manageable" behind. And while the other key values took
 shape of their own accord, it was time to re-architect for an extensible,
 modular future.
 
-
 The Current Architecture & How It Meets Our Values
 ==================================================
 
@@ -115,4 +114,3 @@ on the best possible experience.
 
    * :ref:`quickstart` A short guide to getting started with using Horizon.
    * :ref:`faq` Common questions and answers.
-   * :ref:`glossary` Common terms and their definitions.

doc/source/glossary.rst

@@ -1,22 +0,0 @@
-.. _glossary:
-
-========
-Glossary
-========
-
-Horizon
-    The OpenStack dashboard project. Also the name of the top-level
-    Python object which handles registration for the app.
-
-Dashboard
-    A Python class representing a top-level navigation item (e.g. "project")
-    which provides a consistent API for Horizon-compatible applications.
-
-Panel
-    A Python class representing a sub-navigation item (e.g. "instances")
-    which contains all the necessary logic (views, forms, tests, etc.) for
-    that interface.
-
-Project
-    Used in user-facing text in place of the term "Tenant" which is Keystone's
-    word.

doc/source/index.rst

@@ -1,19 +1,3 @@
-..
-      Copyright 2012 OpenStack Foundation
-      All Rights Reserved.
-
-      Licensed under the Apache License, Version 2.0 (the "License"); you may
-      not use this file except in compliance with the License. You may obtain
-      a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-      Unless required by applicable law or agreed to in writing, software
-      distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-      WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-      License for the specific language governing permissions and limitations
-      under the License.
-
 ========================================
 Horizon: The OpenStack Dashboard Project
 ========================================
@@ -63,11 +47,6 @@ See https://docs.openstack.org/releasenotes/horizon/.
 Information
 ===========
 
-.. toctree::
-   :maxdepth: 1
-
-   glossary
-
 .. only:: html
 
    * :ref:`genindex`