.rubocop.yml in blacklight_oai_provider-6.1.1 vs .rubocop.yml in blacklight_oai_provider-7.0.2

@@ -2,12 +2,12 @@
 
 inherit_from:
   - .rubocop_todo.yml
 
 AllCops:
-  TargetRubyVersion: 2.3
   DisplayCopNames: true
+  TargetRubyVersion: 2.2
   Exclude:
   - "blacklight_oai_provider.gemspec"
 
 Rails:
   Enabled: true
@@ -48,8 +48,5 @@
   Enabled: false
 
 Lint/UnusedMethodArgument:
   Exclude:
   - 'lib/blacklight_oai_provider/set.rb'
-
-RSpec/NestedGroups:
-  Enabled: false