Remove Salmon and PubSubHubbub (#11205)

* Remove Salmon and PubSubHubbub endpoints

* Add error when trying to follow OStatus accounts

* Fix new accounts not being created in ResolveAccountService

app/workers/remote_profile_update_worker.rb

@@ -5,9 +5,5 @@ class RemoteProfileUpdateWorker
 
   sidekiq_options queue: 'pull'
 
-  def perform(account_id, body, resubscribe)
-    UpdateRemoteProfileService.new.call(body, Account.find(account_id), resubscribe)
-  rescue ActiveRecord::RecordNotFound
-    true
-  end
+  def perform(account_id, body, resubscribe); end
 end