Remove old test about README.md being in sync with module docs

tests/tests.rs

@@ -5,53 +5,8 @@ use is_executable::is_executable;
 
 #[cfg(unix)]
 mod unix {
-    use std::env;
-    use std::fs::File;
-    use std::io::Read;
-    use std::process::Command;
-
     use super::*;
 
-    #[test]
-    fn cargo_readme_up_to_date() {
-        if env::var("CI").is_ok() {
-            return;
-        }
-
-        println!("Checking that `cargo readme > README.md` is up to date...");
-
-        let expected = Command::new("cargo")
-            .arg("readme")
-            .current_dir(env!("CARGO_MANIFEST_DIR"))
-            .output()
-            .expect("should run `cargo readme` OK")
-            .stdout;
-        let expected = String::from_utf8_lossy(&expected);
-
-        let actual = {
-            let mut file = File::open(concat!(env!("CARGO_MANIFEST_DIR"), "/README.md"))
-                .expect("should open README.md file");
-            let mut s = String::new();
-            file.read_to_string(&mut s)
-                .expect("should read contents of file to string");
-            s
-        };
-
-        if actual != expected {
-            println!();
-            println!("+++ expected README.md");
-            println!("--- actual README.md");
-            for d in diff::lines(&expected, &actual) {
-                match d {
-                    diff::Result::Left(l) => println!("+{}", l),
-                    diff::Result::Right(r) => println!("-{}", r),
-                    diff::Result::Both(b, _) => println!(" {}", b),
-                }
-            }
-            panic!("Run `cargo readme > README.md` to update README.md")
-        }
-    }
-
     #[test]
     fn executable() {
         assert!(is_executable("./tests/i_am_executable"));