fix: remove unnecessary parentheses — radicle-ci-broker

New Rust complains.

Signed-off-by: Lars Wirzenius liw@liw.fi

     fn parse_journal_line(line: String) -> Result<Value, LogError> {
         let jj: JournalJson = serde_json::from_str(&line)
             .map_err(|err| LogError::JsonParseJournal(line.clone(), err))?;
         serde_json::from_str(&jj.message).map_err(|err| (LogError::JsonParse(line, err)))
         serde_json::from_str(&jj.message).map_err(|err| LogError::JsonParse(line, err))
     }
     fn cib_from_file(filename: &Path) -> Result<Self, LogError> {