Disable asr cuda ctc tutorial (#4006)

Co-authored-by: Sam Anklesaria <[email protected]>

Author: samanklesaria

docs/source/index.rst

@@ -70,7 +70,6 @@ model implementations and application components.
 
    tutorials/speech_recognition_pipeline_tutorial
    tutorials/asr_inference_with_ctc_decoder_tutorial
-   tutorials/asr_inference_with_cuda_ctc_decoder_tutorial
    tutorials/forced_alignment_tutorial
    tutorials/forced_alignment_for_multilingual_data_tutorial
    tutorials/tacotron2_pipeline_tutorial

docs/source/models.decoder.rst

@@ -20,19 +20,3 @@ CTC Decoder
 .. rubric:: Tutorials using CTC Decoder
 
 .. minigallery:: torchaudio.models.decoder.CTCDecoder
-
-CUDA CTC Decoder
-----------------
-
-.. autosummary::
-   :toctree: generated
-   :nosignatures:
-   :template: autosummary/cuda_ctc_decoder_class.rst
-
-   CUCTCDecoder
-   cuda_ctc_decoder
-
-
-.. rubric:: Tutorials using CUDA CTC Decoder
-
-.. minigallery:: torchaudio.models.decoder.CUCTCDecoder