Metals has dropped Atom (fixes 404)

Author: SethTisue

index.md

@@ -67,10 +67,6 @@ scalaIDEs:
     icon: /resources/img/frontpage/sublime.png
     metals: true
     url: "https://scalameta.org/metals/docs/editors/sublime.html"
-  - name: Atom
-    icon: /resources/img/frontpage/atom.png
-    metals: true
-    url: "https://scalameta.org/metals/docs/editors/atom.html"
 # Scala ecosystem
 ecosystemTitle: "Scala ecosystem"
 ecosystemDescription: "The Scala Library Index (or Scaladex) is a representation of a map of all published Scala libraries. With Scaladex, a developer can now query more than 175,000 releases of Scala libraries. Scaladex is officially supported by Scala Center."