Auto merge of #156640 - ehuss:fix-dist-various-2-dilos, r=Mark-Simulacrum

Remove broken dilos apt repo

CI is currently down because apt is unable to access the repo at dilos.org. It is failing inside the fortanix install script which tries to run apt-get with the error:

```
5.679 E: Failed to fetch https://apt.dilos.org/dilos/dists/dilos2/InRelease  403  Forbidden [IP: 116.202.240.188 443]
```

These lines in the Dockerfile were added when Solaris builds were merged into dist-various-2 in https://github.com/rust-lang/rust/pull/45001. However, Solaris builds were split off in https://github.com/rust-lang/rust/pull/138699. In that PR, these lines adding the dilos repository weren't removed.

AFAICT, these are no longer necessary.