Stop trying to shoehorn all Salmon updates into the poor database-connected

StreamEntry model. Simply render Salmon slaps as they are needed

app/services/unblock_service.rb

@@ -1,12 +1,31 @@
 # frozen_string_literal: true
 
 class UnblockService < BaseService
-  include StreamEntryRenderer
-
   def call(account, target_account)
     return unless account.blocking?(target_account)
 
     unblock = account.unblock!(target_account)
-    NotificationWorker.perform_async(stream_entry_to_xml(unblock.stream_entry), account.id, target_account.id) unless target_account.local?
+    NotificationWorker.perform_async(build_xml(unblock), account.id, target_account.id) unless target_account.local?
+  end
+
+  private
+
+  def build_xml(block)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{block.account.acct} no longer blocks #{block.target_account.acct}"
+
+        author(xml) do
+          include_author xml, block.account
+        end
+
+        object_type xml, :activity
+        verb xml, :unblock
+
+        target(xml) do
+          include_author xml, block.target_account
+        end
+      end
+    end.to_xml
   end
 end