BREAKING CHANGE: remove deprecated QuanityFactory.from_backend()

ndsl/initialization/allocator.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import warnings
 from collections.abc import Callable, Sequence
 from typing import Any
 
@@ -58,25 +57,6 @@ def add_data_dimensions(
 
         self.sizer.data_dimensions.update(data_dimension_descriptions)
 
-    @classmethod
-    def from_backend(cls, sizer: GridSizer, backend: str) -> QuantityFactory:
-        """Initialize a QuantityFactory to use a specific GT4Py backend.
-
-        Note: This method is deprecated. Please change your code to use the
-        constructor instead.
-
-        Args:
-            sizer: GridSizer object that determines the array sizes.
-            backend: GT4Py backend name used for performance-optimized allocation.
-        """
-        warnings.warn(
-            "QuantityFactory.from_backend(sizer, backend) is deprecated. Use "
-            "QuantityFactory(sizer, backend=backend) instead.",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        return cls(sizer, backend=backend)
-
     def empty(
         self,
         dims: Sequence[str],