Remove already configured excludes from .rubocop.yml (#30741)

.rubocop.yml

@@ -4,14 +4,9 @@ AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
   Exclude:
-    - db/schema.rb
-    - bin/*
-    - node_modules/**/*
     - Vagrantfile
-    - vendor/**/*
     - config/initializers/json_ld*
     - lib/mastodon/migration_helpers.rb
-    - lib/templates/**/*
   ExtraDetails: true
   NewCops: enable
   TargetRubyVersion: 3.1 # Oldest supported ruby version