No need to alias loose and tight variants of check membership

[JoshOrndorff]

As discussed in this seminar https://www.crowdcast.io/e/substrate-seminar/44, it is no longer necessary to have this import rename https://github.com/substrate-developer-hub/recipes/blob/master/runtimes/super-runtime/src/lib.rs#L17. construct_runtime! will just work as expected now.