[pipe.h] 移除多余的头文件，防止形成头文件递归包含 (#5621)

components/drivers/include/ipc/pipe.h

 /*
- * Copyright (c) 2006-2021, RT-Thread Development Team
+ * Copyright (c) 2006-2022, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  */
+
 #ifndef PIPE_H__
 #define PIPE_H__
 
+#include <rtthread.h>
+
 /**
  * Pipe Device
  */
-#include <rtthread.h>
-#include <rtdevice.h>
 
 struct rt_pipe_device
 {
@@ -36,4 +37,5 @@ typedef struct rt_pipe_device rt_pipe_t;
 
 rt_pipe_t *rt_pipe_create(const char *name, int bufsz);
 int rt_pipe_delete(const char *name);
+
 #endif /* PIPE_H__ */