Revert "Added Address:new_unchecked (#887)" (#904)

This reverts commit 7e6ffe8.

src/address/types.rs

@@ -73,18 +73,7 @@ impl Address {
     pub fn new<U: AsRef<str>, D: AsRef<str>>(user: U, domain: D) -> Result<Self, AddressError> {
         (user, domain).try_into()
     }
-    /// Creates a new email address from a string without checking it.
-    ///
-    /// # Panics
-    /// Will panic if @ is not present in the string
-    pub fn new_unchecked(serialized: String) -> Self {
-        let at_start = serialized.chars().position(|c| c == '@').unwrap();
 
-        Self {
-            serialized,
-            at_start,
-        }
-    }
     /// Gets the user portion of the `Address`.
     ///
     /// # Examples
@@ -314,19 +303,4 @@ mod tests {
             Address::check_domain("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.com").is_err()
         );
     }
-
-    #[test]
-    fn test_new_unchecked() {
-        let addr = Address::new_unchecked("something@example.com".to_owned());
-        assert_eq!(addr.user(), "something");
-        assert_eq!(addr.domain(), "example.com");
-
-        assert_eq!(addr, Address::new("something", "example.com").unwrap());
-    }
-
-    #[test]
-    #[should_panic]
-    fn test_new_unchecked_panic() {
-        Address::new_unchecked("somethingexample.com".to_owned());
-    }
 }