The right-click context menu is a handy feature in Windows operating system that lists the available options for a particular file, folder or item. If you wish, you can add the option Delete Folder Contents to the right click context menu. So if you do not want to delete the whole folder, but only to empty its contents, you need not open the folder, Select all and then click Delete.

Using the context menu option you can simply empty the folder’s contents, without deleting that folder itself.

To do so download this zipped .reg file, extract contents, click open and add its contents to your registry.

Thats it! Via TWCF.