parsers, tokio-xmpp: remove unnecessary jid feature alias

It can be done directly using `jid = { version = "*", features =
["stringprep"] }` even though jid is imported from another lib.

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

parsers/Cargo.toml

@@ -29,7 +29,6 @@ chrono = { version = "0.4.5", default-features = false, features = ["std"] }
 component = []
 # Disable validation of unknown attributes.
 disable-validation = []
-serde = ["jid/serde"]
 
 [package.metadata.docs.rs]
 rustdoc-args = [ "--sort-modules-by-appearance", "-Zunstable-options" ]

tokio-xmpp/Cargo.toml

@@ -38,4 +38,3 @@ rustc_version = "0.4"
 default = ["tls-native"]
 tls-rust = ["tokio-rustls", "webpki-roots"]
 tls-native = ["tokio-native-tls", "native-tls"]
-serde = ["xmpp-parsers/serde"]