chore: remove pointless TODO

Author: xmatthias

freqtrade/exchange/gate.py

@@ -70,7 +70,6 @@ def additional_exchange_init(self) -> None:
         """
         try:
             if not self._config["dry_run"]:
-                # TODO: This should work with 4.4.34 and later.
                 self._api.load_unified_status()
                 is_unified = self._api.options.get("unifiedAccount")