code cleanup

Author: acethepace

demo/src/main/java/com/daimajia/numberprogressbar/example/MainActivity.java

@@ -1,20 +1,16 @@
 package com.daimajia.numberprogressbar.example;
 
 import android.os.Bundle;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.Toast;
 
 import com.daimajia.numberprogressbar.NumberProgressBar;
 import com.daimajia.numberprogressbar.OnProgressBarListener;
 
-import java.util.Timer;
-import java.util.TimerTask;
 
-
-public class MainActivity extends ActionBarActivity implements OnProgressBarListener {
-    private Timer timer;
+public class MainActivity extends AppCompatActivity implements OnProgressBarListener {
 
     private NumberProgressBar bnp;
 
@@ -49,11 +45,6 @@ public boolean onOptionsItemSelected(MenuItem item) {
     @Override
     protected void onDestroy() {
         super.onDestroy();
-        try {
-            timer.cancel();
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
     }
 
     @Override