Delete useless file

Inc/sensor_example.h

@@ -1,28 +0,0 @@
-//
-// Sensor Usage Example Header
-// 传感器使用示例头文件
-//
-
-#ifndef SENSOR_EXAMPLE_H
-#define SENSOR_EXAMPLE_H
-
-#include "gd32e23x.h"
-#include "board_config.h"
-
-/*!
-    \brief      传感器初始化示例
-    \param[in]  none
-    \param[out] none
-    \retval     none
-*/
-void sensors_init_example(void);
-
-/*!
-    \brief      传感器读取示例
-    \param[in]  none
-    \param[out] none
-    \retval     none
-*/
-void sensors_read_example(void);
-
-#endif // SENSOR_EXAMPLE_H