refactor: remove Alembic migrations and Discord integration

tgbot/database/repository.py

@@ -6,7 +6,6 @@ from sqlalchemy import delete as sqlalchemy_delete
 from sqlalchemy import select
 from sqlalchemy import update as sqlalchemy_update
 from tgbot.database.core import Base, database_path, session_scope
-from tgbot.database.migration_runner import run_migrations
 from tgbot.utils.misc.bot_logging import bot_logger
 
 ModelTranslator = TypeVar("ModelTranslator", bound=Base)
@@ -151,7 +150,7 @@ class BaseRepository(Generic[ModelTranslator, EntityTranslator]):
 # Применение миграций и создание дефолтных строк
 async def prepare_database() -> None:
     database_path.parent.mkdir(parents=True, exist_ok=True)
-    await run_migrations()
+    # await run_migrations()
 
     from tgbot.database.db_payments import Paymentsx
     from tgbot.database.db_settings import Settingsx