Remove warning

Author: maxrjones

src/zarr/storage/_common.py

@@ -2,7 +2,6 @@
 
 import importlib.util
 import json
-import warnings
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, Literal, Self, TypeAlias
 
@@ -117,12 +116,6 @@ async def open(cls, store: Store, path: str, mode: AccessModeLiteral | None = No
         elif mode == "r":
             # Create read-only copy for read mode on writable store
             try:
-                warnings.warn(
-                    "Store is not read-only but mode is 'r'. Creating a read-only copy. "
-                    "This behavior may change in the future with a more granular permissions model.",
-                    UserWarning,
-                    stacklevel=1,
-                )
                 self = await cls._create_open_instance(store.with_read_only(True), path)
             except NotImplementedError as e:
                 raise ValueError(

tests/test_store/test_core.py

@@ -266,8 +266,4 @@ def test_relativize_path_invalid() -> None:
 def test_different_open_mode() -> None:
     store = MemoryStore()
     zarr.create((100,), store=store, zarr_format=2, path="a")
-    with pytest.warns(
-        UserWarning,
-        match="Store is not read-only but mode is 'r'. Creating a read-only copy. This behavior may change in the future with a more granular permissions model",
-    ):
-        zarr.open_array(store=store, path="a", zarr_format=2, mode="r")
+    zarr.open_array(store=store, path="a", zarr_format=2, mode="r")