Remove manually installed libssl 1.1

[michaelsproul]

Description

We unblocked CI in a janky way here, by installing the deprecated libssl 1.1 into ubuntu-latest (24.04):

• Add libssl install to udeps task #6777

As far as I understand, this issues arose because we're using a pre-built cargo-udeps binary on CI. When I install and run cargo-udeps from source on my local machine running Ubuntu 24.04, it works fine.

The cargo-udeps repo switched to building their binaries on Ubuntu 22.04 to remove the dependence on libssl 1.1 from their published binaries:

• Latest release no longer works on GitHub's ubuntu-latest runner est31/cargo-udeps#294

We may be able to just remove the libssl 1.1 dep now that a new cargo-udeps release is available. Or, failing that, we could install from source.