macros: Remove use requirement on minidom::Element.

src/component.rs

@@ -4,7 +4,6 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-use minidom::Element;
 use error::Error;
 use helpers::PlainText;
 use ns;
@@ -37,6 +36,7 @@ impl Handshake {
 mod tests {
     use super::*;
     use try_from::TryFrom;
+    use minidom::Element;
 
     #[test]
     fn test_simple() {