Suppress RuboCop's offense

Follow rubocop/rubocop#8390.

```console
% bundle exec rake

Offenses:

lib/rubocop/cop/rails/has_many_or_has_one_dependent.rb:57:20: C:
Style/SoleNestedConditional: Consider merging nested conditions into
outer unless conditions.
            return if valid_options?(association_with_options?(node))
                   ^^

185 files inspected, 1 offense detected, 1 offense auto-correctable
RuboCop failed!
```

lib/rubocop/cop/rails/has_many_or_has_one_dependent.rb

@@ -52,11 +52,7 @@ class HasManyOrHasOneDependent < Cop
 
         def on_send(node)
           return if active_resource?(node.parent)
-
-          unless association_without_options?(node)
-            return if valid_options?(association_with_options?(node))
-          end
-
+          return if !association_without_options?(node) && valid_options?(association_with_options?(node))
           return if valid_options_in_with_options_block?(node)
 
           add_offense(node, location: :selector)