Remove internal function type definitions (more)

Author: huynguyengl99

stubs/channels/channels/layers.pyi

@@ -81,10 +81,8 @@ class InMemoryChannelLayer(BaseChannelLayer):
     async def send(self, channel: str, message: dict[str, Any]) -> None: ...
     async def receive(self, channel: str) -> dict[str, Any]: ...
     async def new_channel(self, prefix: str = ...) -> str: ...
-    def _clean_expired(self) -> None: ...
     async def flush(self) -> None: ...
     async def close(self) -> None: ...
-    def _remove_from_groups(self, channel: str) -> None: ...
     async def group_add(self, group: str, channel: str) -> None: ...
     async def group_discard(self, group: str, channel: str) -> None: ...
     async def group_send(self, group: str, message: dict[str, Any]) -> None: ...

stubs/channels/channels/testing/live.pyi

@@ -5,8 +5,6 @@ from typing_extensions import TypeAlias
 from channels.routing import ProtocolTypeRouter
 from channels.utils import _ChannelApplication
 from django.contrib.staticfiles.handlers import ASGIStaticFilesHandler
-from django.db.backends.base.base import BaseDatabaseWrapper
-from django.db.backends.sqlite3.base import DatabaseWrapper
 from django.test.testcases import TransactionTestCase
 from django.test.utils import modify_settings
 
@@ -30,6 +28,3 @@ class ChannelsLiveServerTestCase(TransactionTestCase):
     def live_server_url(self) -> str: ...
     @property
     def live_server_ws_url(self) -> str: ...
-    def _pre_setup(self) -> None: ...
-    def _post_teardown(self) -> None: ...
-    def _is_in_memory_db(self, connection: BaseDatabaseWrapper | DatabaseWrapper) -> bool: ...