Update docs to not mention 'registration mechanism' - and move corresponding...

Update docs to not mention 'registration mechanism' - and move corresponding utils out of Beta (#7142)
Co-authored-by: Philip Meier <github.pmeier@posteo.de>

docs/source/models.rst

@@ -120,13 +120,12 @@ behavior, such as batch normalization. To switch between these modes, use
     # Set model to eval mode
     model.eval()
 
-Model Registration Mechanism
-----------------------------
-
-.. betastatus:: registration mechanism
+Listing and retrieving available models
+---------------------------------------
 
-As of v0.14, TorchVision offers a new model registration mechanism which allows retrieving models
-and weights by their names. Here are a few examples on how to use them:
+As of v0.14, TorchVision offers a new mechanism which allows listing and
+retrieving models and weights by their names. Here are a few examples on how to
+use them:
 
 .. code:: python
 
@@ -148,7 +147,7 @@ and weights by their names. Here are a few examples on how to use them:
     weights_enum2 = get_model_weights(torchvision.models.quantization.mobilenet_v3_large)
     assert weights_enum == weights_enum2
 
-Here are the available public methods of the model registration mechanism:
+Here are the available public functions to retrieve models and their corresponding weights:
 
 .. currentmodule:: torchvision.models
 .. autosummary::

torchvision/models/_api.py

@@ -107,8 +107,6 @@ def get_weight(name: str) -> WeightsEnum:
     """
     Gets the weights enum value by its full name. Example: "ResNet50_Weights.IMAGENET1K_V1"
 
-    .. betastatus:: function
-
     Args:
         name (str): The name of the weight enum entry.
 
@@ -143,8 +141,6 @@ def get_model_weights(name: Union[Callable, str]) -> WeightsEnum:
     """
     Returns the weights enum class associated to the given model.
 
-    .. betastatus:: function
-
     Args:
         name (callable or str): The model builder function or the name under which it is registered.
 
@@ -208,8 +204,6 @@ def list_models(module: Optional[ModuleType] = None) -> List[str]:
     """
     Returns a list with the names of registered models.
 
-    .. betastatus:: function
-
     Args:
         module (ModuleType, optional): The module from which we want to extract the available models.
 
@@ -226,8 +220,6 @@ def get_model_builder(name: str) -> Callable[..., nn.Module]:
     """
     Gets the model name and returns the model builder method.
 
-    .. betastatus:: function
-
     Args:
         name (str): The name under which the model is registered.
 
@@ -246,8 +238,6 @@ def get_model(name: str, **config: Any) -> nn.Module:
     """
     Gets the model name and configuration and returns an instantiated model.
 
-    .. betastatus:: function
-
     Args:
         name (str): The name under which the model is registered.
         **config (Any): parameters passed to the model builder method.