Remove many of the now-unused images in core. Some images have been left for now, notably our previous style icons, action indicators, and images that see a higher frequency of use in plugins to allow them more time to adapt to the new design. props ocean90, Ipstenu, coffee2code. fixes #26036.


git-svn-id: https://develop.svn.wordpress.org/trunk@26821 602fd350-edb4-49c9-b593-d223f7449a82