Update src/libs/README.md

Co-authored-by: XAMPPRocky <4464295+XAMPPRocky@users.noreply.github.com>

Author: KodrAus

src/libs/README.md

@@ -6,5 +6,3 @@ This section documents meta processes by the Libs team.
 
 The libs team hangs out primarily in [the rust-lang Zulip](https://rust-lang.zulipchat.com/) these days in the `#t-libs` stream.
 You can also find out more details about [Zulip and how the Rust community uses it](../../chat/zulip.html).
-
-The `#rustc` IRC channel on `irc.mozilla.org` is in a "quasi-deprecated" status and is not recommended.