Documentation: Drop "compatibility notes" section

The compatibility tables would need structural rework in order to
express the "phasing out" of support for specific software versions.

I think it is safe to remove this section completely in order to
reduce maintenance overhead.

Author: amotl

docs/appendices/compatibility.rst

@@ -12,4 +12,3 @@ Supplementary information for the CrateDB Python client library.
    :maxdepth: 2
 
    data-types
-   compatibility

docs/appendices/index.rst

@@ -14,8 +14,7 @@ Connect to CrateDB
 .. SEEALSO::
 
    Supplementary information about the CrateDB Database API client can be found
-   in the :ref:`data types appendix <data-types-db-api>` and the
-   :ref:`compatibility notes <compatibility>`.
+   in the :ref:`data types appendix <data-types-db-api>`.
 
    For general help using the Database API, consult `PEP 0249`_.
 
@@ -218,8 +217,6 @@ Authentication
    If you are using CrateDB 2.1.x or later, you must supply a username. If you
    are using earlier versions of CrateDB, this argument is not supported.
 
-   See the :ref:`compatibility notes <cratedb-versions>` for more information.
-
 You can authenticate with CrateDB like so::
 
     >>> connection = client.connect(..., username="<USERNAME>", password="<PASSWORD>")

docs/connect.rst

@@ -14,8 +14,7 @@ Query CrateDB
 .. SEEALSO::
 
    Supplementary information about the CrateDB Database API client can be found
-   in the :ref:`data types appendix <data-types-db-api>` and the
-   :ref:`compatibility notes <compatibility>`.
+   in the :ref:`data types appendix <data-types-db-api>`.
 
    For general help using the Database API, consult `PEP 0249`_.
 

docs/query.rst

@@ -23,8 +23,7 @@ The CrateDB Python client library is validated to work with SQLAlchemy versions
 .. SEEALSO::
 
    Supplementary information about the CrateDB SQLAlchemy dialect can be found
-   in the :ref:`data types appendix <data-types-sqlalchemy>` and the
-   :ref:`compatibility notes <compatibility>`.
+   in the :ref:`data types appendix <data-types-sqlalchemy>`.
 
    For general help using SQLAlchemy, consult the `SQLAlchemy tutorial`_ or the
    `SQLAlchemy library`_ .