Add back ruma-events/tests/stripped.rs by updating existing file

[DevinR528]

No description provided.

[jplatte]

It doesn't show in the log on web (there's a message at the start of the test build with a link to the full log), but there's some clippy warnings in the test you added back. Could you set up clippy locally to fix these? (in VSCode with RA, set "rust-analyzer.checkOnSave.command": "clippy")

[DevinR528]

This is so weird I have not been able to reproduce any of these clippy warnings locally and I've been using rustc 1.46.0-nightly (feb3536eb 2020-06-09) and clippy 0.0.212 (feb3536 2020-06-09). rustup won't update from 2020-06-09 to 2020-06-12 for me either. Anyways I hope this works as I can't really test it but I fixed the errors from the full log.

Using the RA setting works perfectly though thanks for that!!