fix: remove redis config for sidekiq to use heroku:redis:mini

Author: garussell

config/initializers/sidekiq.rb

@@ -5,10 +5,4 @@
 # Sidekiq.configure_client do |config|
 #   config.redis = { url: 'redis://localhost:6379/0' }
 # end
-Sidekiq.configure_server do |config|
-  config.redis = { url: ENV['REDIS_URL'], network_timeout: 5 }
-end
 
-Sidekiq.configure_client do |config|
-  config.redis = { url: ENV['REDIS_URL'], network_timeout: 5 }
-end