--- a/devtools/client/jar.mn
+++ b/devtools/client/jar.mn
@@ -174,17 +174,16 @@ devtools.jar:
     skin/images/webconsole.svg (themes/images/webconsole.svg)
     skin/images/breadcrumbs-divider@2x.png (themes/images/breadcrumbs-divider@2x.png)
     skin/images/breadcrumbs-scrollbutton.png (themes/images/breadcrumbs-scrollbutton.png)
     skin/images/breadcrumbs-scrollbutton@2x.png (themes/images/breadcrumbs-scrollbutton@2x.png)
     skin/animationinspector.css (themes/animationinspector.css)
     skin/canvasdebugger.css (themes/canvasdebugger.css)
     skin/debugger.css (themes/debugger.css)
     skin/netmonitor.css (themes/netmonitor.css)
-    skin/dom.css (themes/dom.css)
     skin/performance.css (themes/performance.css)
     skin/memory.css (themes/memory.css)
     skin/scratchpad.css (themes/scratchpad.css)
     skin/shadereditor.css (themes/shadereditor.css)
     skin/storage.css (themes/storage.css)
     skin/splitview.css (themes/splitview.css)
     skin/styleeditor.css (themes/styleeditor.css)
     skin/webaudioeditor.css (themes/webaudioeditor.css)

deleted file mode 100644
--- a/devtools/client/themes/dom.css
+++ /dev/null
@@ -1,9 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-:root.theme-dark {
-}
-:root.theme-light {
-}