diff --git a/tools/formatting.py b/tools/formatting.py
deleted file mode 100644
index 0b63e031fa..0000000000
--- a/tools/formatting.py
+++ /dev/null
@@ -1,135 +0,0 @@
-#
-# File      : formatting.py
-# This file is part of RT-Thread RTOS
-# COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
-#
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License along
-#  with this program; if not, write to the Free Software Foundation, Inc.,
-#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Change Logs:
-# Date           Author       Notes
-# 2021-03-02     Meco Man     The first version
-# 2021-03-04     Meco Man     增加统一转换成UTF-8编码格式功能
-
-
-#本文件会自动对指定路径下的所有文件包括子文件夹的文件（仅针对.c.h）进行扫描
-#   1)将源文件编码统一为UTF-8;
-#   2)将TAB键替换为空格;
-#   3)将每行末尾多余的空格删除，并统一换行符为'\n'; 
-#使用时只需要双击本文件，输入要扫描的文件夹路径即可
-#不能保证100%全部成功转换为UTF-8，有一些编码特殊或识别不准确会在终端打印信息，需人工转换
-
-#欢迎对本文件的功能继续做出补充，欢迎提交PR
-
-import os
-import chardet
-
-#用空格代替TAB键
-#这里并不是简单的将TAB替换成4个空格
-#空格个数到底是多少需要计算，因为TAB制表本身有自动对齐的功能
-def tab2spaces(line):
-    list_str = list(line) #字符串打散成列表，放边操作
-    i = list_str.count('\t')
-    
-    while i > 0:
-        ptr = list_str.index('\t')
-        del list_str[ptr]
-        space_need_to_insert = 4 - (ptr%4)
-        j = 0
-        while j < space_need_to_insert:
-            list_str.insert(ptr,' ')
-            j = j+1
-        
-        i = i-1
-
-    line = ''.join(list_str) #列表恢复成字符串
-    return line
-
-#删除每行末尾多余的空格 统一使用\n作为结尾
-def formattail(line):
-    line = line.rstrip()
-    line = line + '\n'
-    return line
-
-#对单个文件进行格式整理
-def format_codes(filename):
-    try:
-        file=open(filename,'r',encoding = 'utf-8')
-        file_temp=open('temp','w',encoding = 'utf-8')
-        for line in file:
-            line = tab2spaces(line)
-            line = formattail(line)
-            file_temp.write(line)
-        file_temp.close()
-        file.close()
-        os.remove(filename)
-        os.rename('temp',filename)
-
-def get_encode_info(file):
-    with open(file, 'rb') as f:
-        code = chardet.detect(f.read())['encoding']       
-        #charde库有一定几率对当前文件的编码识别不准确        
-        if code == 'EUC-JP': #容易将含着少量中文的英文字符文档识别为日语编码格式
-            code = 'GB2312'
-        elif code == 'ISO-8859-1': #部分文件GB2312码会被识别成ISO-8859-1
-            code = 'GB2312'
-
-        if not (code == 'ascii' or code == 'utf-8' or code == 'GB2312' #编码识别正确
-                or code == 'Windows-1252'): # Windows-1252 是由于意法半导体是法国企业's的'是法语的'导致的
-            if code != None:
-                print('未处理，需人工确认：'+code+':'+file) #需要人工确认
-                code = None
-
-        return code
-
-#将单个文件转为UTF-8编码
-def conver_to_utf_8 (path):
-    try: 
-        info = get_encode_info(path)
-        if info == None:
-            return 0 #0 失败
-
-        file=open(path,'rb+')
-        data = file.read()
-        string = data.decode(info)
-        utf = string.encode('utf-8')
-        file.seek(0)
-        file.write(utf)
-        file.close()
-        return 1 #1成功
-    except UnicodeDecodeError:
-        print("UnicodeDecodeError未处理，需人工确认"+path)
-        return 0
-    except UnicodeEncodeError:
-        print("UnicodeEncodeError未处理，需人工确认"+path)
-        return 0
-
-# 递归扫描目录下的所有文件
-def traversalallfile(path):
-    filelist=os.listdir(path)
-    for file in filelist:
-        filepath=os.path.join(path,file)
-        if os.path.isdir(filepath):
-            traversalallfile(filepath)
-        elif os.path.isfile(filepath):
-            if filepath.endswith(".c") == True or filepath.endswith(".h") == True: #只处理.c和.h文件
-                if conver_to_utf_8(filepath) == 1: #先把这个文件转为UTF-8编码,1成功
-                    format_codes(filepath) #再对这个文件进行格式整理
-
-def formatfiles():
-    workpath = input('enter work path: ')
-    traversalallfile(workpath)
-
-if __name__ == '__main__':
-    formatfiles()