Remove unused deprecation decorator/warning (#4917)

libs/langgraph/langgraph/_api/deprecation.py

@@ -1,84 +0,0 @@
-import functools
-import warnings
-from typing import Any, Callable, TypeVar, Union, cast
-
-
-class LangGraphDeprecationWarning(DeprecationWarning):
-    pass
-
-
-F = TypeVar("F", bound=Callable[..., Any])
-C = TypeVar("C", bound=type[Any])
-
-
-def deprecated(
-    since: str, alternative: str, *, removal: str = "", example: str = ""
-) -> Callable[[F], F]:
-    def decorator(obj: Union[F, C]) -> Union[F, C]:
-        removal_str = removal if removal else "a future version"
-        message = (
-            f"{obj.__name__} is deprecated as of version {since} and will be"
-            f" removed in {removal_str}. Use {alternative} instead.{example}"
-        )
-        if isinstance(obj, type):
-            original_init = obj.__init__  # type: ignore[misc]
-
-            @functools.wraps(original_init)
-            def new_init(self, *args: Any, **kwargs: Any) -> None:  # type: ignore[no-untyped-def]
-                warnings.warn(message, LangGraphDeprecationWarning, stacklevel=2)
-                original_init(self, *args, **kwargs)
-
-            obj.__init__ = new_init  # type: ignore[misc]
-
-            docstring = (
-                f"**Deprecated**: This class is deprecated as of version {since}. "
-                f"Use `{alternative}` instead."
-            )
-            if obj.__doc__:
-                docstring = docstring + f"\n\n{obj.__doc__}"
-            obj.__doc__ = docstring
-
-            return cast(C, obj)
-        elif callable(obj):
-
-            @functools.wraps(obj)
-            def wrapper(*args: Any, **kwargs: Any) -> Any:
-                warnings.warn(message, LangGraphDeprecationWarning, stacklevel=2)
-                return obj(*args, **kwargs)
-
-            docstring = (
-                f"**Deprecated**: This function is deprecated as of version {since}. "
-                f"Use `{alternative}` instead."
-            )
-            if obj.__doc__:
-                docstring = docstring + f"\n\n{obj.__doc__}"
-            wrapper.__doc__ = docstring
-
-            return cast(F, wrapper)
-        else:
-            raise TypeError(
-                f"Can only add deprecation decorator to classes or callables, got '{type(obj)}' instead."
-            )
-
-    return decorator
-
-
-def deprecated_parameter(
-    arg_name: str, since: str, alternative: str, *, removal: str
-) -> Callable[[F], F]:
-    def decorator(func: F) -> F:
-        @functools.wraps(func)
-        def wrapper(*args, **kwargs):  # type: ignore[no-untyped-def]
-            if arg_name in kwargs:
-                warnings.warn(
-                    f"Parameter '{arg_name}' in function '{func.__name__}' is "
-                    f"deprecated as of version {since} and will be removed in version {removal}. "
-                    f"Use '{alternative}' parameter instead.",
-                    category=LangGraphDeprecationWarning,
-                    stacklevel=2,
-                )
-            return func(*args, **kwargs)
-
-        return cast(F, wrapper)
-
-    return decorator