fix: remove redundant reasoning assignment in ChatCompletionsStreamResponseChoiceDelta

dto/openai_response.go

@@ -110,7 +110,7 @@ func (c *ChatCompletionsStreamResponseChoiceDelta) GetReasoningContent() string
 
 func (c *ChatCompletionsStreamResponseChoiceDelta) SetReasoningContent(s string) {
 	c.ReasoningContent = &s
-	c.Reasoning = &s
+	//c.Reasoning = &s
 }
 
 type ToolCallResponse struct {