Remove needless map
Remove needless map

rust-lang/rustup,rust-lang/rustup,rust-lang/rustup,nodakai/rustup.rs,inejge/rustup.rs,inejge/rustup.rs,nodakai/rustup.rs,inejge/rustup.rs,nodakai/rustup.rs,inejge/rustup.rs,rust-lang/rustup,nodakai/rustup.rs,nodakai/rustup.rs,inejge/rustup.rs,rust-lang/rustup