Wrap EE-only Sidekiq configuration in `ee` block

config/initializers/sidekiq.rb

@@ -77,10 +77,6 @@ Sidekiq.configure_server do |config|
   end
   Sidekiq::Cron::Job.load_from_hash! cron_jobs
 
-  Gitlab::Mirror.configure_cron_job!
-
-  Gitlab::Geo.configure_cron_jobs!
-
   Gitlab::SidekiqVersioning.install!
 
   db_config = Gitlab::Database.config ||
@@ -89,13 +85,18 @@ Sidekiq.configure_server do |config|
   ActiveRecord::Base.establish_connection(db_config)
   Rails.logger.debug("Connection Pool size for Sidekiq Server is now: #{ActiveRecord::Base.connection.pool.instance_variable_get('@size')}")
 
-  # EE only
+  Gitlab.ee do
+    Gitlab::Mirror.configure_cron_job!
+
+    Gitlab::Geo.configure_cron_jobs!
+
     if Gitlab::Geo.geo_database_configured?
       Rails.configuration.geo_database['pool'] = Sidekiq.options[:concurrency]
       Geo::TrackingBase.establish_connection(Rails.configuration.geo_database)
 
       Rails.logger.debug("Connection Pool size for Sidekiq Server is now: #{Geo::TrackingBase.connection_pool.size} (Geo tracking database)")
     end
+  end
 
   # Avoid autoload issue such as 'Mail::Parsers::AddressStruct'
   # https://github.com/mikel/mail/issues/912#issuecomment-214850355