Remove superfluous extern crate test.

.travis.yml

@@ -7,8 +7,8 @@ rust:
 script:
   - cargo build --verbose
   - cargo doc
+  - cargo test --verbose;
   - if [ "$TRAVIS_RUST_VERSION" = "nightly" ]; then
-      cargo test --verbose;
       cargo bench --verbose;
     fi
   - cargo build --verbose --manifest-path=stree_cmd/Cargo.toml

src/lib.rs

@@ -27,10 +27,7 @@
 
 #![deny(missing_docs)]
 
-#![cfg_attr(test, feature(test))]
-
 #[cfg(test)] extern crate quickcheck;
-#[cfg(test)] extern crate test;
 
 pub use table::SuffixTable;
 

tests/tests.rs

@@ -1,8 +1,5 @@
-#![feature(test)]
-
 extern crate quickcheck;
 extern crate suffix;
-extern crate test;
 
 use quickcheck::{QuickCheck, TestResult, Testable};
 use suffix::SuffixTable;