Remove redundant configuration from Cargo.toml

`documentation` is no longer needed since docs.rs is now automatically
linked, and the Cargo docs say that `homepage` should not be redundant
with `repository`.

Author: tgross35

Cargo.toml

@@ -4,11 +4,7 @@ version = "0.2.22"
 authors = ["The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/getopts"
-documentation = "https://doc.rust-lang.org/getopts"
-homepage = "https://github.com/rust-lang/getopts"
-description = """
-getopts-like option parsing.
-"""
+description = "getopts-like option parsing"
 categories = ["command-line-interface"]
 edition = "2021"
 rust-version = "1.66"