README: Remove obsolete `extern crate http` instructions

hyperium / http

Rust HTTP types

Apache License 2.0

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README: Remove obsolete `extern crate http` instructions #512

Closed Turbo87 closed 2 years ago

Turbo87 commented 2 years ago

This crate declares edition = 2018, in which these extern crate instructions are no longer necessary, so it should be safe to remove them from the README file.