Set recycle bin to delete files in it automatically
The
Recycle Bin is the special folders of windows on the hard disk to store
deleted files and folders. These files or folders can be restored from
the Recycle Bin to their original location if required for use.

But
you can set the Recycle Bin setting that the files and folders are
deleted from hard disk are not placed in the Recycle Bin. So with the
help of windows registry editor you can set the Recycle Bin to always
delete items.
Jus follow the steps :
+ First click on Start button then type Regedit in Run option.
+ Here locate the location to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ Explorer\BitBucket
+ Here in right side panel, double click on NukeOnDelete and set its value 1.
+ Now close the registry editor and restart your computer after any changes to go into effect.