New site: Unknown images in WP core

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I just launched a new site last week, then got this Wordfence alert over the weekend. Are these anything to be concerned about?

High Severity Problems:

* Unknown file in WordPress core: wp-admin/images/graphicspack.png

* Unknown file in WordPress core: wp-admin/images/iconscaches.png

* Unknown file in WordPress core: wp-admin/images/include.png

* Unknown file in WordPress core: wp-admin/images/loginimage.png

* Unknown file in WordPress core: wp-admin/images/maplistfile.gif

* Unknown file in WordPress core: wp-admin/images/previewpics.gif

* Unknown file in WordPress core: wp-admin/images/strlistfile.gif

* Unknown file in WordPress core: wp-admin/images/tempthumbs.png