DEV: nuke code dependent comments from scheduler.rake

lib/tasks/scheduler.rake

@@ -1,21 +1,17 @@
 desc "This task is called by the Heroku scheduler add-on"
 
-# Every day at 6am
 task enqueue_digest_emails: :environment do
   Jobs::EnqueueDigestEmails.new.execute(nil)
 end
 
-# Every day at 4am
 task category_stats: :environment do
   Jobs::CategoryStats.new.execute(nil)
 end
 
-# Every 15 minutes
 task periodical_updates: :environment do
   Jobs::PeriodicalUpdates.new.execute(nil)
 end
 
-# Every day
 task version_check: :environment do
   Jobs::VersionCheck.new.execute(nil)
 end