chore: Delete code for first Rocket application

Author: utilForever

src/main.rs

@@ -1,28 +0,0 @@
-#[macro_use]
-extern crate rocket;
-
-#[get("/")]
-fn hello() -> &'static str {
-    "Hello, world!"
-}
-
-#[launch]
-fn rocket() -> _ {
-    rocket::build().mount("/", routes![hello])
-}
-
-#[cfg(test)]
-mod test {
-    use super::rocket;
-    use rocket::http::Status;
-    use rocket::local::blocking::Client;
-
-    #[test]
-    fn test_hello() {
-        let client = Client::tracked(rocket()).expect("valid rocket instance");
-        let response = client.get(uri!(super::hello)).dispatch();
-
-        assert_eq!(response.status(), Status::Ok);
-        assert_eq!(response.into_string().unwrap(), "Hello, world!");
-    }
-}