[TortoiseSVN] Disconnect a folder/project from subversion

Thing to do is to go removing your .svn folder located at your project root.
Steps in this article in showed at windows 8 platform:

Step 1 ) make sure your hidden files are shown :

Step 2)
Remove your .svn folder located at your project root:

Step 3) 
Press F5 to refresh file explorer and find folder is disconnect a folder/project from subversion :
(Icons with tick and cross are disappeared)

Reference

https://tw.answers.yahoo.com/question/index?qid=20100112000016KK05600