Merge branch 'remove_dropping_support' into docs_update

Author: samanklesaria

CONTRIBUTING.md

@@ -61,7 +61,6 @@ Optional packages to install if you want to run related tests:
 - `librosa`
 - `requests`
 - `soundfile`
-- `kaldi_io`
 - `transformers`
 - `fairseq` (it has to be newer than `0.10.2`, so you will need to install from
   source. Commit `e6eddd80` is known to work.)

docs/source/_templates/autosummary/model_class.rst

@@ -147,25 +147,6 @@ Factory Functions
 
 {%- if prototype_factory[fullname] %}
 
-Prototype Factory Functions
-===========================
-
-.. currentmodule:: torchaudio.prototype.models
-
-.. autosummary::
-   :toctree: ../generated
-   :nosignatures:
-
-{% for item in prototype_factory[fullname] %}
-   {{["~torchaudio.prototype.models", item] | join('.')}}
-{%- endfor %}
-
-{%- endif %}
-
-.. UTILITY FUNCTIONS
-
-{%- if utils[fullname] %}
-
 Utility Functions
 =================
 

docs/source/_templates/autosummary/prototype_model_class.rst

@@ -103,7 +103,6 @@ model implementations and application components.
    models.decoder
    pipelines
    compliance.kaldi
-   kaldi_io
    utils
 
 .. toctree::

docs/source/index.rst

@@ -83,9 +83,6 @@ Optional Dependencies
 
   Required for performing text-to-speech with :ref:`Tacotron2`.
 
-* `kaldi_io <https://pypi.org/project/kaldi-io/>`__
-
-  Required to use :py:mod:`torchaudio.kaldi_io` module.
 
 
 Compatibility Matrix