Fix: remove useless Sentry performance transaction

Author: odesenfans

src/aleph/commands.py

@@ -127,11 +127,6 @@ async def main(args):
         run_db_migrations(config)
     LOGGER.info("Database initialized.")
 
-    with sentry_sdk.start_transaction(name="init-sleep"):
-        from time import sleep
-
-        sleep(3)
-
     engine = make_engine(
         config,
         echo=args.loglevel == logging.DEBUG,