Store self user in entity cache

telethon/client/telegrambaseclient.py

@@ -435,10 +435,6 @@ class TelegramBaseClient(abc.ABC):
         self._phone = None
         self._tos = None
 
-        # Sometimes we need to know who we are, cache the self peer
-        self._self_input_peer = None
-        self._bot = None
-
         # A place to store if channels are a megagroup or not (see `edit_admin`)
         self._megagroup_cache = {}