Windows has created that folder as a backup in case you ever lost data or. This can usually built with the cleanup tool disk (All Programs, Accessories, System Tools), which refers you to the Windows system old folder (s) files.
You may select files for all users of this computer in the window click on Disk Cleanup tab on the same system files clean.
Request refers again to the same station. Place a checkmark in Previous Windows installation (s) and click OK, Delete Files. Should it be possible, then remove as follow. Right click the folder in Explorer and choose Properties. Open the Security tab, click Advanced, and call yourself an owner of the folder.