note is now too old to be relevant

Author: tshepang

src/backend/backend-agnostic.md

@@ -8,9 +8,6 @@ backends (e.g. [Cranelift]).
 
 [Cranelift]: https://github.com/bytecodealliance/wasmtime/tree/HEAD/cranelift
 
-> The following is a copy/paste of a README from the rust-lang/rust repo.
-> Please submit a PR if it needs updating.
-
 # Refactoring of `rustc_codegen_llvm`
 by Denis Merigoux, October 23rd 2018