Dear Hảo Chung,
Welcome to Microsoft Community.
We understand that there are two OneDrive icons in your Explorer and you need to delete one of them.
According to your description, if you move the file to two other folders, the duplicate file information will be synchronized. This may be because your OneDrive information has been logged in and detected multiple times.
You can first confirm which OneDrive icon you need to delete.
If you want to delete one of the OneDrive folders, it is recommended that you try to delete the redundant OneDrive by modifying the registry:
Win+R open Run, type regedit to open the registry, click File, Export, check all, OK; (to prevent you from operating incorrectly and affecting the operation of other registration information)
- Locate the computer \HKEY_CLASSES_ROOT\CLSID, press Win+F to search for OneDrive,

Once you have found the Onedrive entry you don't want to show, select
System.IsPinnedToNameSpaceTree
and right-click and select “Modify”.

Change its “Value data” to “0”, click OK, and then close the registry.

Restart File Explorer to see if the problem is solved
Disclaimer: Generally, modifying registry subkeys or work group is intended for advanced users, administrators, and IT Professionals. It can help fix some problems; however, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For further protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, clickHow to back up and restore the registry in Windows - Microsoft Support to view the article.
You can reply to us with updates or other questions.
Best Regards,
Zenobia.Z | Microsoft Community Support Specialist