Remove stabilized publish-lockfile feature

Author: phil-opp

Cargo.toml

@@ -1,13 +1,10 @@
-cargo-features = ["publish-lockfile"]
-
 [package]
 name = "bootloader"
 version = "0.6.1"
 authors = ["Philipp Oppermann <[email protected]>"]
 license = "MIT/Apache-2.0"
 description = "An experimental pure-Rust x86 bootloader."
 repository = "https://github.com/rust-osdev/bootloader"
-publish-lockfile = true
 edition = "2018"
 build = "build.rs"