feat: remove deprecated Corgy.new_with_args

corgy/_corgy.py

@@ -19,7 +19,6 @@
     TypeVar,
     Union,
 )
-from warnings import warn
 
 from ._helpfmt import CorgyHelpFormatter
 
@@ -533,16 +532,6 @@ def __init__(self, **args):
             grp_obj = grp_type(**grp_args)
             setattr(self, grp_name, grp_obj)
 
-    @classmethod
-    def new_with_args(cls: Type[_T], **args) -> _T:
-        #: :meta private:
-        warn(
-            f"this method is deprecated: use `{cls.__name__}(**args)` "
-            f"to create a new instance",
-            DeprecationWarning,
-        )
-        return cls(**args)
-
     def __repr__(self):
         s = f"{self.__class__.__name__}("
         for i, arg_name in enumerate(getattr(self.__class__, "__annotations__")):