Issue #2448213 by alexpott: Remove admin templates from Classy

core/modules/block/templates/block-list.html.twig

core/modules/image/templates/image-style-preview.html.twig

core/themes/classy/templates/admin/block-list.html.twig

core/themes/classy/templates/admin/image-anchor.html.twig

...hemes/classy/templates/admin/image-crop-summary.html.twig

...mes/classy/templates/admin/image-resize-summary.html.twig

...mes/classy/templates/admin/image-rotate-summary.html.twig

...emes/classy/templates/admin/image-scale-summary.html.twig

...emes/classy/templates/admin/image-style-preview.html.twig

...emes/classy/templates/content-edit/image-widget.html.twig