Delete html_root_url comment

Author: dtolnay

src/lib.rs

@@ -83,7 +83,6 @@
 //! types make use of thread-local memory, meaning they cannot be accessed from
 //! a different thread.
 
-// Proc-macro2 types in rustdoc of other crates get linked to here.
 #![doc(html_root_url = "https://docs.rs/proc-macro2/1.0.104")]
 #![cfg_attr(any(proc_macro_span, super_unstable), feature(proc_macro_span))]
 #![cfg_attr(super_unstable, feature(proc_macro_def_site))]