From 920d281d45776cc3a65daa3b2b386cc299dd30f4 Mon Sep 17 00:00:00 2001
From: Robert Resch <robert@resch.dev>
Date: Fri, 9 May 2025 14:40:23 +0200
Subject: [PATCH] Remove deprecated core set_time_zone function (#144559)

---
 homeassistant/core_config.py | 21 ---------------------
 tests/test_core_config.py    | 13 -------------
 2 files changed, 34 deletions(-)

diff --git a/homeassistant/core_config.py b/homeassistant/core_config.py
index 9cd232097a7..ccae24a907b 100644
--- a/homeassistant/core_config.py
+++ b/homeassistant/core_config.py
@@ -60,7 +60,6 @@ from .core import DOMAIN as HOMEASSISTANT_DOMAIN, HomeAssistant
 from .generated.currencies import HISTORIC_CURRENCIES
 from .helpers import config_validation as cv, issue_registry as ir
 from .helpers.entity_values import EntityValues
-from .helpers.frame import ReportBehavior, report_usage
 from .helpers.storage import Store
 from .helpers.typing import UNDEFINED, UndefinedType
 from .util import dt as dt_util, location
@@ -712,26 +711,6 @@ class Config:
         else:
             raise ValueError(f"Received invalid time zone {time_zone_str}")
 
-    def set_time_zone(self, time_zone_str: str) -> None:
-        """Set the time zone.
-
-        This is a legacy method that should not be used in new code.
-        Use async_set_time_zone instead.
-
-        It will be removed in Home Assistant 2025.6.
-        """
-        report_usage(
-            "sets the time zone using set_time_zone instead of async_set_time_zone",
-            core_integration_behavior=ReportBehavior.ERROR,
-            custom_integration_behavior=ReportBehavior.ERROR,
-            breaks_in_ha_version="2025.6",
-        )
-        if time_zone := dt_util.get_time_zone(time_zone_str):
-            self.time_zone = time_zone_str
-            dt_util.set_default_time_zone(time_zone)
-        else:
-            raise ValueError(f"Received invalid time zone {time_zone_str}")
-
     async def _async_update(
         self,
         *,
diff --git a/tests/test_core_config.py b/tests/test_core_config.py
index 2723c8e7196..7fbd10db206 100644
--- a/tests/test_core_config.py
+++ b/tests/test_core_config.py
@@ -5,7 +5,6 @@ from collections import OrderedDict
 import copy
 import os
 from pathlib import Path
-import re
 from tempfile import TemporaryDirectory
 from typing import Any
 from unittest.mock import Mock, PropertyMock, patch
@@ -1072,18 +1071,6 @@ async def test_debug_mode_defaults_to_off(hass: HomeAssistant) -> None:
     assert not hass.config.debug
 
 
-async def test_set_time_zone_deprecated(hass: HomeAssistant) -> None:
-    """Test set_time_zone is deprecated."""
-    with pytest.raises(
-        RuntimeError,
-        match=re.escape(
-            "Detected code that sets the time zone using set_time_zone instead of "
-            "async_set_time_zone. Please report this issue"
-        ),
-    ):
-        await hass.config.set_time_zone("America/New_York")
-
-
 async def test_core_config_schema_imperial_unit(
     hass: HomeAssistant, issue_registry: ir.IssueRegistry
 ) -> None: