How to delete pictures off memory card

Usually when I transfer pictures from my camera to my PC I connect the camera to the PC via USB.  Then I cut and paste the images from the camera to the folder I chose.  But "cut" isn't an option when I connect my a57.  I can copy them to my computer but I can't delete them through my file manager.

Is there a better way to delete pictures from my memory card then one at a time through the camera interface?