Remove rubocop rule around access modifiers

The fewer exceptions to the default the better, and we're going to want
to use an access modifier in a generator, which will end up in other
people's codebases, so we should be as conventional as possible.

.rubocop.yml

@@ -37,9 +37,6 @@ Layout/CaseIndentation:
     - end
   IndentOneStep: true
 
-Layout/AccessModifierIndentation:
-  EnforcedStyle: outdent
-
 Layout/EndAlignment:
   EnforcedStyleAlignWith: variable