To remove the OneDrive folder, you need to carefully edit the registry.
Click your Start Button, type regedit and hit Enter to open the Registry Editor.
Click View and make sure 'Address Bar' is turned on.
Paste this into the Address Bar at the top and hit Enter.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
In the left pane, expand the NameSpace key (folder)
There should be a number of sub-folders of NameSpace with alpha-numeric names, click each one.
When you find the folder that contains a value named OneDrive - CompanyName
Right click the folder that contains that data and choose to backup that folder (key) to a registry file.
Then, right click and delete that folder and to apply the changes, restart your PC.
Please be very careful editing the registry to ensure you only remove the folder (key) that references the work OneDrive folder.