remove participation parent author check

the check that the participation parent author is local is now done in
the diaspora_federation gem

app/workers/receive_base.rb

@@ -12,6 +12,7 @@ module Workers
            DiasporaFederation::Entity::InvalidEntityName,
            DiasporaFederation::Entity::UnknownEntity,
            DiasporaFederation::Entities::Relayable::SignatureVerificationFailed,
+           DiasporaFederation::Entities::Participation::ParentNotLocal,
            DiasporaFederation::Federation::Receiver::InvalidSender,
            DiasporaFederation::Federation::Receiver::NotPublic,
            DiasporaFederation::Salmon::SenderKeyNotFound,

lib/diaspora/federation/receive.rb

@@ -65,9 +65,11 @@ module Diaspora
       def self.participation(entity)
         author = author_of(entity)
         ignore_existing_guid(Participation, entity.guid, author) do
-          parent = Mappings.model_class_for(entity.parent_type).find_by(guid: entity.parent_guid)
-
-          Participation.create!(author: author, guid: entity.guid, target: parent) if parent.author.local?
+          Participation.create!(
+            author: author,
+            guid:   entity.guid,
+            target: Mappings.model_class_for(entity.parent_type).find_by(guid: entity.parent_guid)
+          )
         end
       end
 

spec/lib/diaspora/federation/receive_spec.rb

@@ -255,19 +255,6 @@ describe Diaspora::Federation::Receive do
       expect(participation.target).to eq(post)
     end
 
-    it "does not save the participation if the target is not local" do
-      remote_post = FactoryGirl.create(:status_message, author: sender, public: true)
-      remote_participation = FactoryGirl.build(
-        :participation_entity,
-        author:      sender.diaspora_handle,
-        parent_guid: remote_post.guid
-      )
-
-      expect(Diaspora::Federation::Receive.perform(remote_participation)).to be_nil
-
-      expect(Participation.exists?(guid: remote_participation.guid)).to be_falsey
-    end
-
     it_behaves_like "it ignores existing object received twice", Participation do
       let(:entity) { participation_entity }
     end