chore: remove alembic database migration system

tgbot/database/migration_runner.py

@@ -1,53 +0,0 @@
-# - *- coding: utf- 8 - *-
-import asyncio
-from pathlib import Path
-from typing import Optional
-
-from alembic import command
-from alembic.config import Config
-from sqlalchemy.engine import Connection
-from sqlalchemy.ext.asyncio import AsyncEngine
-
-from tgbot.database.core import database_url
-
-PROJECT_ROOT = Path(__file__).resolve().parents[2]
-ALEMBIC_INI = PROJECT_ROOT / "alembic.ini"
-
-
-# Сбор Alembic-конфига от корня проекта
-def get_alembic_config(url: str = database_url) -> Config:
-    config = Config(str(ALEMBIC_INI))
-    config.set_main_option("sqlalchemy.url", url)
-
-    return config
-
-
-# Применение миграций до последней версии
-async def run_migrations(engine: Optional[AsyncEngine] = None) -> None:
-    if engine is None:
-        config = get_alembic_config()
-        await asyncio.to_thread(command.upgrade, config, "head")
-        return
-
-    config = get_alembic_config(str(engine.url))
-
-    connection = engine.connect()
-    await connection.start()
-    transaction = connection.begin()
-    await transaction.start()
-
-    try:
-        await connection.run_sync(_upgrade_with_connection, config)
-    except Exception:
-        await transaction.rollback()
-        raise
-    else:
-        await transaction.commit()
-    finally:
-        await connection.close()
-
-
-# Запуск Alembic на готовом соединении
-def _upgrade_with_connection(connection: Connection, config: Config) -> None:
-    config.attributes["connection"] = connection
-    command.upgrade(config, "head")