Removed unused class warning, tweaked synchronization service logic.

src/com/timsu/astrid/sync/SynchronizationService.java

@@ -72,6 +72,7 @@ public class SynchronizationService extends BroadcastReceiver {
         Integer syncFrequencySeconds = Preferences.getSyncAutoSyncFrequency(context);
 
         if(syncFrequencySeconds == null) {
+            Log.w("sync-service", "disabled synchronization service");
     	    unscheduleService(context);
     	    return;
     	}
@@ -95,7 +96,7 @@ public class SynchronizationService extends BroadcastReceiver {
         am.cancel(pendingIntent);
 
         // schedule new
-        am.setInexactRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + offset,
+        am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + offset,
                 interval, pendingIntent);
     }
 

src/com/timsu/astrid/utilities/Notifications.java

@@ -17,7 +17,6 @@ import android.content.res.Resources;
 import android.graphics.Color;
 import android.media.AudioManager;
 import android.net.Uri;
-import android.os.Vibrator;
 import android.util.Log;
 
 import com.timsu.astrid.R;