Remove deprecation of cutc decoder

Author: samanklesaria

src/torchaudio/models/decoder/__init__.py

@@ -1,4 +1,3 @@
-from torchaudio._internal.module_utils import dropping_support, dropping_class_support
 import inspect
 _CTC_DECODERS = [
     "CTCHypothesis",
@@ -35,11 +34,7 @@ def __getattr__(name: str):
                 "To use CUCTC decoder, please set BUILD_CUDA_CTC_DECODER=1 when building from source."
             ) from err
 
-        orig_item = getattr(_cuda_ctc_decoder, name)
-        if inspect.isclass(orig_item):
-            item = dropping_class_support(orig_item)
-        else:
-            item = dropping_support(orig_item)
+        item = getattr(_cuda_ctc_decoder, name)
         globals()[name] = item
         return item
     raise AttributeError(f"module {__name__} has no attribute {name}")