Remove get_double_type from the SQLAlchemy types module

With SQLAlchemy 2.0 required (#845), get_double_type only returned
types.DOUBLE and nothing in PyAthena calls it. Remove it from
pyathena.sqlalchemy.types for the 4.0.0 release; use
sqlalchemy.types.DOUBLE instead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: laughingman7743

pyathena/sqlalchemy/types.py

@@ -6,7 +6,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING
 
 from sqlalchemy import types
 from sqlalchemy.sql import sqltypes
@@ -32,19 +32,9 @@
     "AthenaStruct",
     "AthenaTimestamp",
     "Tinyint",
-    "get_double_type",
 ]
 
 
-def get_double_type() -> type[Any]:
-    """Get the SQLAlchemy type for Athena DOUBLE.
-
-    Returns:
-        ``types.DOUBLE``.
-    """
-    return types.DOUBLE
-
-
 class AthenaBinary(types.LargeBinary):
     """SQLAlchemy binary type with Athena hexadecimal literals."""
 

tests/pyathena/sqlalchemy/test_types.py

@@ -1,14 +1,7 @@
-from sqlalchemy import (
-    types,
-)
+from sqlalchemy import types
 
-from pyathena.sqlalchemy.types import (
-    get_double_type,
-)
+from pyathena.sqlalchemy.base import ischema_names
 
 
-def test_get_double_type():
-    from pyathena.sqlalchemy.base import ischema_names
-
-    assert get_double_type() is types.DOUBLE
+def test_double_column_type():
     assert ischema_names["double"] is types.DOUBLE