Inherit from standard rules in default config

.rubocop.yml

@@ -12,8 +12,6 @@ AllCops:
 
 inherit_from:
   - .rubocop/layout.yml
-  - .rubocop/metrics.yml
-  - .rubocop/naming.yml
   - .rubocop/rails.yml
   - .rubocop/rspec_rails.yml
   - .rubocop/rspec.yml
@@ -22,11 +20,19 @@ inherit_from:
   - .rubocop_todo.yml
   - .rubocop/strict.yml
 
+inherit_gem:
+  standard: config/base.yml
+  standard-performance: config/base.yml
+  standard-rails: config/base.yml
+
 inherit_mode:
   merge:
     - Exclude
 
 require:
+  - standard
+  - standard-performance
+  - standard-rails
   - rubocop-rails
   - rubocop-rspec
   - rubocop-rspec_rails

.rubocop/metrics.yml

@@ -1,23 +0,0 @@
----
-Metrics/AbcSize:
-  Exclude:
-    - lib/mastodon/cli/*.rb
-
-Metrics/BlockLength:
-  Enabled: false
-
-Metrics/ClassLength:
-  Enabled: false
-
-Metrics/CyclomaticComplexity:
-  Exclude:
-    - lib/mastodon/cli/*.rb
-
-Metrics/MethodLength:
-  Enabled: false
-
-Metrics/ModuleLength:
-  Enabled: false
-
-Metrics/ParameterLists:
-  CountKeywordArgs: false

.rubocop/naming.yml

@@ -1,3 +0,0 @@
----
-Naming/BlockForwarding:
-  EnforcedStyle: explicit