lib, message, jingle_ft: Remove unused imports.

src/jingle_ft.rs

@@ -124,7 +124,6 @@ pub fn parse_jingle_ft(root: &Element) -> Result<Description, Error> {
 #[cfg(test)]
 mod tests {
     use minidom::Element;
-    use error::Error;
     use jingle_ft;
 
     #[test]

src/lib.rs

@@ -10,7 +10,6 @@
 extern crate minidom;
 extern crate jid;
 extern crate base64;
-use minidom::Element;
 
 /// Error type returned by every parser on failure.
 pub mod error;

src/message.rs

@@ -168,7 +168,6 @@ pub fn serialise(message: &Message) -> Element {
 mod tests {
     use std::str::FromStr;
     use minidom::Element;
-    use error::Error;
     use jid::Jid;
     use message;