tidy(app): remove extraneous class attr type annotations

Author: psychedelicious

invokeai/app/services/board_image_records/board_image_records_sqlite.py

@@ -1,5 +1,4 @@
 import sqlite3
-import threading
 from typing import Optional, cast
 
 from invokeai.app.services.board_image_records.board_image_records_base import BoardImageRecordStorageBase
@@ -15,7 +14,6 @@
 class SqliteBoardImageRecordStorage(BoardImageRecordStorageBase):
     _conn: sqlite3.Connection
     _cursor: sqlite3.Cursor
-    _lock: threading.RLock
 
     def __init__(self, db: SqliteDatabase) -> None:
         super().__init__()

invokeai/app/services/board_records/board_records_sqlite.py

@@ -1,5 +1,4 @@
 import sqlite3
-import threading
 from typing import Union, cast
 
 from invokeai.app.services.board_records.board_records_base import BoardRecordStorageBase
@@ -21,7 +20,6 @@
 class SqliteBoardRecordStorage(BoardRecordStorageBase):
     _conn: sqlite3.Connection
     _cursor: sqlite3.Cursor
-    _lock: threading.RLock
 
     def __init__(self, db: SqliteDatabase) -> None:
         super().__init__()

invokeai/app/services/image_records/image_records_sqlite.py

@@ -1,5 +1,4 @@
 import sqlite3
-import threading
 from datetime import datetime
 from typing import Optional, Union, cast
 
@@ -24,7 +23,6 @@
 class SqliteImageRecordStorage(ImageRecordStorageBase):
     _conn: sqlite3.Connection
     _cursor: sqlite3.Cursor
-    _lock: threading.RLock
 
     def __init__(self, db: SqliteDatabase) -> None:
         super().__init__()

invokeai/app/services/session_queue/session_queue_sqlite.py

@@ -1,7 +1,6 @@
 import asyncio
 import json
 import sqlite3
-import threading
 from typing import Optional, Union, cast
 
 from pydantic_core import to_jsonable_python
@@ -40,7 +39,6 @@ class SqliteSessionQueue(SessionQueueBase):
     __invoker: Invoker
     __conn: sqlite3.Connection
     __cursor: sqlite3.Cursor
-    __lock: threading.RLock
 
     def start(self, invoker: Invoker) -> None:
         self.__invoker = invoker