revert(mcp): 移除MCP SSE客户端及工具集成支持

src/plugin_system/core/tool_use.py

@@ -280,11 +280,10 @@ class ToolExecutor:
             logger.info(
                 f"{self.log_prefix} 正在执行工具: [bold green]{function_name}[/bold green] | 参数: {function_args}"
             )
-
+            
             # 检查是否是MCP工具
             try:
                 from src.plugin_system.utils.mcp_tool_provider import mcp_tool_provider
-
                 if function_name in mcp_tool_provider.mcp_tools:
                     logger.info(f"{self.log_prefix}执行MCP工具: {function_name}")
                     result = await mcp_tool_provider.call_mcp_tool(function_name, function_args)
@@ -297,7 +296,7 @@ class ToolExecutor:
                     }
             except Exception as e:
                 logger.debug(f"检查MCP工具时出错: {e}")
-
+            
             function_args["llm_called"] = True  # 标记为LLM调用
 
             # 检查是否是二步工具的第二步调用