move old APIs to the attic

As we do with other things we don't want folks to see, shove the
APIs in the attic. These files are being moved to the api-ref
directory in the keystone repo. See topic `keystone-api-sprint`.

https://review.openstack.org/#/q/branch:master+topic:keystone-api-sprint

Change-Id: Ic61dfa8ef1d71954ae5b3e09f1ccc8ec6e774973

doc/source/index.rst

@@ -1,29 +1,5 @@
 .. identity-specs documentation master file
 
-==========================
-Identity API Specification
-==========================
-
-v3 API
-======
-
-.. toctree::
-   :glob:
-   :maxdepth: 1
-
-   api/v3/*
-
-
-v2.0 API
-========
-
-.. toctree::
-   :glob:
-   :maxdepth: 1
-
-   api/v2.0/*
-
-
 ================================
 Identity Program Specifications
 ================================

tox.ini

@@ -10,7 +10,7 @@ install_command = pip install -U {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
 commands =
     python setup.py testr --slowest --testr-args='{posargs}'
-    doc8 api/ specs/
+    doc8 specs/
 
 [testenv:venv]
 commands = {posargs}