You can remove a virtual directory to permanently delete
it from the database.
Open the Site Administrator Home
page.
In the IIS
Web Service area, click Manage
Virtual Directories.
On the Virtual Directories
page, select the Virtual Directory to be removed.
Click the Remove
tab.
Click OK
to confirm. The virtual directory is removed from the list.
Note:
Deleting a virtual directory does not delete the corresponding
physical directory or files.