Remove spam check and dependency on nilsimsa gem (#16011)

app/services/process_mentions_service.rb

@@ -43,7 +43,6 @@ class ProcessMentionsService < BaseService
     end
 
     status.save!
-    check_for_spam(status)
 
     mentions.each { |mention| create_notification(mention) }
   end
@@ -72,8 +71,4 @@ class ProcessMentionsService < BaseService
   def resolve_account_service
     ResolveAccountService.new
   end
-
-  def check_for_spam(status)
-    SpamCheck.perform(status)
-  end
 end

app/services/remove_status_service.rb

@@ -41,7 +41,6 @@ class RemoveStatusService < BaseService
           remove_from_hashtags
           remove_from_public
           remove_from_media if @status.media_attachments.any?
-          remove_from_spam_check
           remove_media
         end
 
@@ -163,10 +162,6 @@ class RemoveStatusService < BaseService
     @status.media_attachments.destroy_all
   end
 
-  def remove_from_spam_check
-    redis.zremrangebyscore("spam_check:#{@status.account_id}", @status.id, @status.id)
-  end
-
   def lock_options
     { redis: Redis.current, key: "distribute:#{@status.id}" }
   end