Update tests to reflect new UUID-less topic schema

spec/lib/celery_script/checker_spec.rb

@@ -101,8 +101,7 @@ describe CeleryScript::Checker do
     ]
     chk = CeleryScript::Checker.new(tree, corpus)
     expect(chk.valid?).to be false
-    expect(chk.error.message)
-      .to eq("You must select a Peripheral before using it.")
+    expect(chk.error.message).to eq("Peripheral requires a valid pin number")
   end
 
   it "Catches bad `pin_type`s in `read_pin`" do

spec/lib/resources/resources_preprocessor_spec.rb

@@ -83,7 +83,7 @@ describe Resources::PreProcessor do
       expect(segment[0]).to eq("bot")
       expect(segment[1]).to eq("device_#{dev.id}")
       expect(segment[2]).to eq("from_api")
-      expect(segment[3]).to eq("wrong_uuid")
+      expect(segment[3]).to eq(nil)
     end
 
     it "processes resources" do