Lint: organize configuration of excluded files

.rubocop.yml

@@ -14,9 +14,10 @@ inherit_from: .rubocop_todo.yml
 # - Only include permanent config; temporary goes in .rubocop_todo.yml
 
 AllCops:
+  # Generated files, like schema.rb, are out of our control.
   Exclude:
-    - gemfiles/vendor/bundle/**/* # This dir only shows up on travis ¯\_(ツ)_/¯
-    - spec/dummy_app/db/schema.rb # Generated, out of our control
+    - gemfiles/*
+    - spec/dummy_app/db/schema.rb
 
   # Enable pending cops so we can adopt the code before they are switched on.
   NewCops: enable
@@ -24,10 +25,6 @@ AllCops:
   # See "Lowest supported ruby version" in CONTRIBUTING.md
   TargetRubyVersion: 2.6
 
-Bundler/OrderedGems:
-  Exclude:
-    - gemfiles/* # generated by Appraisal
-
 Layout/ArgumentAlignment:
   EnforcedStyle: with_fixed_indentation