Merge pull request #34 from dart-lang/unused

Remove unused

lib/src/benchmark_base.dart

diff --git a/lib/src/benchmark_base.dart b/lib/src/benchmark_base.dart
index fc21496..c72b330 100644
--- a/lib/src/benchmark_base.dart
+++ b/lib/src/benchmark_base.dart
@@ -38,7 +38,6 @@
   // time minimum has been reached.
   static double measureFor(Function f, int minimumMillis) {
     int minimumMicros = minimumMillis * 1000;
-    int time = 0;
     int iter = 0;
     Stopwatch watch = new Stopwatch();
     watch.start();