update notes

modules/prompt_parser_diffusers.py

@@ -12,10 +12,9 @@ debug_enabled = os.environ.get('SD_PROMPT_DEBUG', None)
 debug = shared.log.trace if os.environ.get('SD_PROMPT_DEBUG', None) is not None else lambda *args, **kwargs: None
 debug('Trace: PROMPT')
 orig_encode_token_ids_to_embeddings = EmbeddingsProvider._encode_token_ids_to_embeddings # pylint: disable=protected-access
-token_dict = None
-token_type = None
+token_dict = None # used by helper get_tokens
+token_type = None # used by helper get_tokens
 cache = {}
-cache_type = None
 
 
 def compel_hijack(self, token_ids: torch.Tensor,