[update] remove extra code. (#5663)

Author: liukangcc

components/finsh/cmd.c

@@ -40,14 +40,6 @@
 
 #define LIST_FIND_OBJ_NR 8
 
-long hello(void)
-{
-    rt_kprintf("Hello RT-Thread!\n");
-
-    return 0;
-}
-MSH_CMD_EXPORT(hello, say hello world);
-
 static long clear(void)
 {
     rt_kprintf("\x1b[2J\x1b[H");
@@ -886,28 +878,4 @@ long list_device(void)
 MSH_CMD_EXPORT(list_device, list device in system);
 #endif
 
-long list(void)
-{
-    rt_kprintf("--Commands List:\n");
-    {
-        struct finsh_syscall *index;
-        for (index = _syscall_table_begin;
-                index < _syscall_table_end;
-                FINSH_NEXT_SYSCALL(index))
-        {
-            /* skip the internal command */
-            if (strncmp((char *)index->name, "__", 2) == 0) continue;
-
-#if defined(FINSH_USING_DESCRIPTION) && defined(FINSH_USING_SYMTAB)
-            rt_kprintf("%-16s -- %s\n", index->name, index->desc);
-#else
-            rt_kprintf("%s\n", index->name);
-#endif
-        }
-    }
-
-    return 0;
-}
-MSH_CMD_EXPORT(list, list all commands in system)
-
 #endif /* RT_USING_FINSH */