refactor(status): remove redundant static lifetime

Author: tottoto

src/status.rs

@@ -542,7 +542,7 @@ impl Error for InvalidStatusCode {}
 
 // A string of packed 3-ASCII-digit status code values for the supported range
 // of [100, 999] (900 codes, 2700 bytes).
-const CODE_DIGITS: &'static str = "\
+const CODE_DIGITS: &str = "\
 100101102103104105106107108109110111112113114115116117118119\
 120121122123124125126127128129130131132133134135136137138139\
 140141142143144145146147148149150151152153154155156157158159\