Thanks for this, you rock!!! I figured out how to remove them from an installation then spent today looking for a way to remove them from the image. The Photos app and Reader app are garbage. My users were getting sick and tired of having to constantly reassign their many file types to Windows Image Viewer and Acrobat as well as my myself being sick of having to show them. With those two apps removed Window's defaults to those apps now automatically.
One less thing I gotta worry about. I love it!