Try
this thread. You don't have to completely get rid of the all of the droplets, in case you think you might want them ever again. Go to Applications --> Adobe Photoshop CS2 --> Samples. Then right click or control-click on the Droplets folder and select "Create Archive of 'Droplets'" from the menu. It will create a Droplets.zip file. Then delete the Droplets folder and rebuild your LaunchServices menu through Terminal as the linked thread illustrates. That should do it. If you ever find that you need the droplets, just expand the zipped archive and they're already in the correct place.