do not enforce rust Edition 2018

This crate should work with older rust as well.

Fixes: #1

Signed-off-by: Andreea Florescu <[email protected]>

Author: andreeaflorescu

Cargo.toml

@@ -2,7 +2,6 @@
 name = "kvm-bindings"
 version = "0.1.0"
 authors = ["Amazon firecracker team <[email protected]>"]
-edition = "2018"
 description = "Rust FFI bindings to KVM generated using bindgen."
 repository = "https://github.com/rust-vmm/kvm-bindings"
 readme = "README.md"