Remove C Style Command Shell

include/rtdef.h

@@ -277,7 +277,6 @@ typedef int (*init_fn_t)(void);
 /* define these to empty, even if not include finsh.h file */
 #define FINSH_FUNCTION_EXPORT(name, desc)
 #define FINSH_FUNCTION_EXPORT_ALIAS(name, alias, desc)
-#define FINSH_VAR_EXPORT(name, type, desc)
 
 #define MSH_CMD_EXPORT(command, desc)
 #define MSH_CMD_EXPORT_ALIAS(command, alias, desc)

include/rtthread.h

@@ -585,7 +585,7 @@ void rt_assert_handler(const char *ex, const char *func, rt_size_t line);
 #endif /* RT_DEBUG */
 
 #ifdef RT_USING_FINSH
-#include <finsh_api.h>
+#include <finsh.h>
 #endif
 
 /**@}*/