[libcxx-commits] [libcxx] [libcxx][ci][NFC] Remove commented install line and disutils reference (PR #158015)

[David Spickett via libcxx-commits]

DavidSpickett wrote:

This is purely cosmetic so if landing this would trigger a bunch of container rebuilds and you'd like to avoid that, this change can be delayed as long as you like.

https://github.com/llvm/llvm-project/pull/158015