dependabot: Do not check for submodules updates anymore (#599)

Luni-4 · web-flow · commit 001fe86b1216 · 2021-03-31T09:44:13.000+02:00
Since we don't have any submodule anymore.
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
@@ -30,8 +30,3 @@ updates:
   schedule:
     interval: weekly
   open-pull-requests-limit: 99
-- package-ecosystem: gitsubmodule
-  directory: "/"
-  schedule:
-    interval: weekly
-  open-pull-requests-limit: 99
