DEV: Inherit rubocop config from rubocop-discourse.

DEV: Inherit rubocop config from rubocop-discourse.

diff --git a/.rubocop.yml b/.rubocop.yml
index 0ca7eff..d46296c 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1 +1,2 @@
-inherit_from: https://raw.githubusercontent.com/discourse/discourse/master/.rubocop.yml
+inherit_gem:
+  rubocop-discourse: default.yml
diff --git a/Gemfile b/Gemfile
index 0c59f88..1f89a11 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,6 @@ end
 
 group :development, :test do
   gem 'byebug'
-  gem 'rubocop'
   gem 'rubocop-discourse'
 end
 

GitHub sha: da4d1933