Send streaming API delete to people mentioned in status (#5103)

- Previously they wouldn't receive it unless they were author's
  followers
- Skip unpush from public/hashtag timelines if status wasn't
  public in the first place

app/services/batched_remove_status_service.rb

@@ -84,6 +84,8 @@ class BatchedRemoveStatusService < BaseService
   end
 
   def unpush_from_public_timelines(status)
+    return unless status.public_visibility?
+
     payload = @json_payloads[status.id]
 
     redis.pipelined do

app/services/remove_status_service.rb

@@ -14,6 +14,7 @@ class RemoveStatusService < BaseService
 
     remove_from_self if status.account.local?
     remove_from_followers
+    remove_from_affected
     remove_reblogs
     remove_from_hashtags
     remove_from_public
@@ -38,6 +39,12 @@ class RemoveStatusService < BaseService
     end
   end
 
+  def remove_from_affected
+    @mentions.map(&:account).select(&:local?).each do |account|
+      Redis.current.publish("timeline:#{account.id}", @payload)
+    end
+  end
+
   def remove_from_remote_affected
     # People who got mentioned in the status, or who
     # reblogged it from someone else might not follow
@@ -105,6 +112,8 @@ class RemoveStatusService < BaseService
   end
 
   def remove_from_hashtags
+    return unless @status.public_visibility?
+
     @tags.each do |hashtag|
       Redis.current.publish("timeline:hashtag:#{hashtag}", @payload)
       Redis.current.publish("timeline:hashtag:#{hashtag}:local", @payload) if @status.local?
@@ -112,6 +121,8 @@ class RemoveStatusService < BaseService
   end
 
   def remove_from_public
+    return unless @status.public_visibility?
+
     Redis.current.publish('timeline:public', @payload)
     Redis.current.publish('timeline:public:local', @payload) if @status.local?
   end