diff --git a/pyhilo/__init__.py b/pyhilo/__init__.py
index 7320aa2..c09325e 100644
--- a/pyhilo/__init__.py
+++ b/pyhilo/__init__.py
@@ -6,7 +6,6 @@
 from pyhilo.devices import Devices
 from pyhilo.event import Event
 from pyhilo.exceptions import HiloError, InvalidCredentialsError, WebsocketError
-from pyhilo.oauth2 import AuthCodeWithPKCEImplementation
 from pyhilo.util import from_utc_timestamp, time_diff
 from pyhilo.websocket import WebsocketEvent
 
@@ -18,7 +17,6 @@
     "HiloError",
     "InvalidCredentialsError",
     "WebsocketError",
-    "AuthCodeWithPKCEImplementation",
     "from_utc_timestamp",
     "time_diff",
     "WebsocketEvent",
diff --git a/pyhilo/devices.py b/pyhilo/devices.py
index f9257d8..e558646 100644
--- a/pyhilo/devices.py
+++ b/pyhilo/devices.py
@@ -38,7 +38,7 @@ def attributes_list(self) -> list[Union[int, dict[int, list[str]]]]:
         ]
 
     def parse_values_received(self, values: list[dict[str, Any]]) -> list[HiloDevice]:
-        """Places value received in a dict while removing null attributes, 
+        """Places value received in a dict while removing null attributes,
         this returns values to be mapped to devices.
         """
         readings = []
@@ -110,7 +110,7 @@ async def update(self) -> None:
     async def update_devicelist_from_signalr(
         self, values: list[dict[str, Any]]
     ) -> list[HiloDevice]:
-        #ic-dev21 not sure if this is dead code?
+        # ic-dev21 not sure if this is dead code?
         new_devices = []
         for raw_device in values:
             LOG.debug(f"Generating device {raw_device}")
diff --git a/pyhilo/graphql.py b/pyhilo/graphql.py
index 7344e01..8a8dace 100644
--- a/pyhilo/graphql.py
+++ b/pyhilo/graphql.py
@@ -574,7 +574,9 @@ async def subscribe_to_device_updated(
                 await asyncio.sleep(5)
                 try:
                     await self.call_get_location_query(location_hilo_id)
-                    LOG.debug("subscribe_to_device_updated, call_get_location_query success")
+                    LOG.debug(
+                        "subscribe_to_device_updated, call_get_location_query success"
+                    )
 
                 except Exception as e2:
                     LOG.error(
diff --git a/pyhilo/oauth2.py b/pyhilo/oauth2.py
deleted file mode 100644
index 04f8b6b..0000000
--- a/pyhilo/oauth2.py
+++ /dev/null
@@ -1,51 +0,0 @@
-"""Custom OAuth2 implementation."""
-
-from typing import Any, cast
-
-from homeassistant.core import HomeAssistant
-from homeassistant.helpers.config_entry_oauth2_flow import LocalOAuth2Implementation
-
-from pyhilo.const import AUTH_AUTHORIZE, AUTH_CLIENT_ID, AUTH_TOKEN, DOMAIN
-from pyhilo.oauth2helper import OAuth2Helper
-
-
-class AuthCodeWithPKCEImplementation(LocalOAuth2Implementation):  # type: ignore[misc]
-    """Custom OAuth2 implementation."""
-
-    def __init__(
-        self,
-        hass: HomeAssistant,
-    ) -> None:
-        """Initialize AuthCodeWithPKCEImplementation."""
-        super().__init__(
-            hass,
-            DOMAIN,
-            AUTH_CLIENT_ID,
-            "",
-            AUTH_AUTHORIZE,
-            AUTH_TOKEN,
-        )
-
-        self.oauth_helper = OAuth2Helper()
-
-    # ... Override AbstractOAuth2Implementation details
-    @property
-    def name(self) -> str:
-        """Name of the implementation."""
-        return "Hilo"
-
-    @property
-    def extra_authorize_data(self) -> dict:
-        """Extra data that needs to be appended to the authorize url."""
-        return self.oauth_helper.get_authorize_parameters()
-
-    async def async_resolve_external_data(self, external_data: Any) -> dict:
-        """Resolve the authorization code to tokens."""
-        return cast(
-            dict,
-            await self._token_request(
-                self.oauth_helper.get_token_request_parameters(
-                    external_data["code"], external_data["state"]["redirect_uri"]
-                )
-            ),
-        )