Remove deprecated ms arguments for Timer and Future.

pkg/scheduled_test/lib/src/mock_clock.dart

Index: pkg/scheduled_test/lib/src/mock_clock.dart
diff --git a/pkg/scheduled_test/lib/src/mock_clock.dart b/pkg/scheduled_test/lib/src/mock_clock.dart
index efcc7eb2481a2dbca6d260857f6743b07ccefe6b..bda216f35d8d092369d7235edf65d9d023dccca5 100644
--- a/pkg/scheduled_test/lib/src/mock_clock.dart
+++ b/pkg/scheduled_test/lib/src/mock_clock.dart
@@ -30,7 +30,7 @@ Clock mock() {
   return _clock;
 }
 
-typedef void TimerCallback(Timer timer);
+typedef void TimerCallback();
 
 /// Returns a new (possibly mocked) [Timer]. Works the same as [new Timer].
 Timer newTimer(Duration duration, TimerCallback callback) =>
@@ -94,7 +94,7 @@ class _MockTimer implements Timer {
     _subscription = _clock.onTick.listen((time) {
       if (_cancelled || time < _time) return;
       _subscription.cancel();
-      _callback(this);
+      _callback();
     });
   }