Removed unneeded test.

src/primitives/hrp.rs

@@ -537,13 +537,4 @@ mod tests {
         let hrp = Hrp::parse_unchecked(s);
         assert_eq!(hrp.as_bytes(), s.as_bytes());
     }
-
-    #[test]
-    fn error_messages() {
-        assert_eq!("hrp is too long, found 92 characters, must be <= 83", Error::TooLong(92).to_string());
-        assert_eq!("hrp is empty, must have at least 1 character", Error::Empty.to_string());
-        assert_eq!("found non-ASCII character: 😊", Error::NonAsciiChar('😊').to_string());
-        assert_eq!("byte value is not valid US-ASCII: 'ff'", Error::InvalidAsciiByte(255).to_string());
-        assert_eq!("hrp cannot mix upper and lower case", Error::MixedCase.to_string());
-    }
 }