Option 1: Use the product's uninstall tool
There are many applications in nowadays provides an uninstall process on the program's installation folder, or the publisher gets an uninstaller which is specifically used to remove its own products. To remove Microsoft SharePoint Workspace 2010 in this way, please refer to the following uninstall instructions:

1. Right-click on Microsoft SharePoint Workspace 2010 icon on the desktop, and select "Open file location"
Scroll down the list of files and find the uninstall process, usually named "uninst000", "Uninstall", or "Uninstaller"
3. Double click on the uninstall process to start the removal
4. Follow the uninstall wizard to finish the removal, and restart your computer
5. Open the directory of the installation folder again, and make sure everything has been cleared well
6. Click on the Windows button on the bottom-left-corner, and enter "regedit" on the search box
Click to open "regedit" or Registry Editor on the search result
Unfold the registry group inside, and find out those registry keys or entries which contains the program's name
9. Back up these files, and then remove them from your computer system

I hope this will be helpful!
David Boon