Update src/libstd/macros.rs
Update src/libstd/macros.rs

Removed duplicate line.

Co-Authored-By: DevQps <e265f9162f8f28485afe25ef7769f2171e165a19@users.noreply.github.com>
graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust