Update Library/Homebrew/test/resource_spec.rb

Co-authored-by: Sam Ford <1584702+samford@users.noreply.github.com>

Library/Homebrew/test/resource_spec.rb

@@ -82,15 +82,7 @@ describe Resource do
     end
 
     specify "livecheck block defined in resources" do
-      r = described_class.new do
+      expect(livecheck_resource.livecheckable?).to be true
-        url "https://brew.sh/test-1.0.tbz"
-        livecheck do
-          url "https://brew.sh/foo-1.0.tar.gz"
-          regex(/foo/)
-        end
-      end
-
-      expect(r.livecheckable?).to be true
     end
   end