Remove `Encodable`/`Decodable` impls for `LocalInternedString`.

diff --git a/src/libsyntax_pos/symbol.rs b/src/libsyntax_pos/symbol.rs
index aeea3c920af570ccf027fd07c74fbefcde55388e..32ca1fdff93931236d51dd2e953b8802d3ade924 100644 (file)
--- a/src/libsyntax_pos/symbol.rs
+++ b/src/libsyntax_pos/symbol.rs
@@ -1231,18 +1231,6 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
     }
 }
 
-impl Decodable for LocalInternedString {
-    fn decode<D: Decoder>(d: &mut D) -> Result<LocalInternedString, D::Error> {
-        Ok(LocalInternedString::intern(&d.read_str()?))
-    }
-}
-
-impl Encodable for LocalInternedString {
-    fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
-        s.emit_str(self.string)
-    }
-}
-
 /// An alternative to `Symbol` that is focused on string contents. It has two
 /// main differences to `Symbol`.
 ///