Removing the dependency on Pyannote for Diarization and VAD (#15632)

* Removing the dependency on Pyannote

Signed-off-by: taejinp <tango4j@gmail.com>

* Fixed linting and unused variables

Signed-off-by: taejinp <tango4j@gmail.com>

* Apply isort and black reformatting

Signed-off-by: tango4j <tango4j@users.noreply.github.com>

* Removing the accidently added image

Signed-off-by: taejinp <tango4j@gmail.com>

* Apply isort and black reformatting

Signed-off-by: tango4j <tango4j@users.noreply.github.com>

* Removing the accidently an added tutorial notebook box

Signed-off-by: taejinp <tango4j@gmail.com>

* Removing data folder for notebook cache

Signed-off-by: taejinp <tango4j@gmail.com>

* Fixed the der time overshoot and rttm sorting. cpwer.py created

Signed-off-by: taejinp <tango4j@gmail.com>

* Fixed lint issues

Signed-off-by: taejinp <tango4j@gmail.com>

* Fixed line too long issue in ipa_lexicon.py

Signed-off-by: taejinp <tango4j@gmail.com>

* Fixed black on test_der.py

Signed-off-by: taejinp <tango4j@gmail.com>

* reflected the commend on abbreviated ipa_lexicon

Signed-off-by: taejinp <tango4j@gmail.com>

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Signed-off-by: taejinp <tango4j@gmail.com>
Signed-off-by: tango4j <tango4j@users.noreply.github.com>
Co-authored-by: tango4j <tango4j@users.noreply.github.com>
Co-authored-by: Piotr Żelasko <pzelasko@nvidia.com>