Auto merge of #129218 - saethlin:gdb-supports-rust-now, r=jieyouxu

Delete debuginfo test suite infra for gdb without Rust support and lldb with Rust support

Implements rust-lang/rust#128953

I also deleted all the `min-lldb-version: 310` comments, because the oldest compatible distro I can find is Ubuntu 16.04 which ships lldb 3.8, though of course the package that the Ubuntu maintainers put together for that is broken.

Rocky Linux 8 amusingly ships lldb 17, even though it has a similar glibc and kernel version.

This PR is multiple highly mechanical changes. Some of the commits were created by just running `sed`. You may find it easier to review each commit separately.

Author: bors