fix: drop useless and wrong code for zhipu embedding (#11069)

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

api/core/model_runtime/model_providers/zhipuai/text_embedding/text_embedding.py

 
         return [list(map(float, e)) for e in embeddings], embedding_used_tokens
 
-    def embed_query(self, text: str) -> list[float]:
-        """Call out to ZhipuAI's embedding endpoint.
-
-        Args:
-            text: The text to embed.
-
-        Returns:
-            Embeddings for the text.
-        """
-        return self.embed_documents([text])[0]
-
     def _calc_response_usage(self, model: str, credentials: dict, tokens: int) -> EmbeddingUsage:
         """
         Calculate response usage