Remove html_root_url as it is not recommended anymore.

cc: rust-lang/api-guidelines#230

Author: eldruin

Cargo.toml

@@ -13,7 +13,7 @@ license = "MIT OR Apache-2.0"
 name = "embedded-hal"
 readme = "README.md"
 repository = "https://github.com/rust-embedded/embedded-hal"
-version = "1.0.0-alpha.5" # remember to update html_root_url
+version = "1.0.0-alpha.5"
 
 [dependencies]
 nb = "1"

src/lib.rs

@@ -402,7 +402,6 @@
 //! # fn main() {}
 //! ```
 
-#![doc(html_root_url = "https://docs.rs/embedded-hal/1.0.0-alpha.5")]
 #![deny(missing_docs)]
 #![no_std]