delete DownloaderServiceTest stub, it is now crashing

DownloaderServiceTest is just a stub of a test that doesn't really test
anything yet.  It is now causing a NullPointerException, so its a problem:

 java.lang.NullPointerException
 	at org.fdroid.fdroid.net.DownloaderService.notifyDownloadComplete(DownloaderService.java:313)
 	at org.fdroid.fdroid.net.DownloaderService.handleIntent(DownloaderService.java:287)
 	at org.fdroid.fdroid.net.DownloaderService$ServiceHandler.handleMessage(DownloaderService.java:104)
 	at android.os.Handler.dispatchMessage(Handler.java:99)
 	at android.os.Looper.loop(Looper.java:137)
 	at android.os.HandlerThread.run(HandlerThread.java:60)

app/src/androidTest/java/org/fdroid/fdroid/net/DownloaderServiceTest.java

@@ -1,41 +0,0 @@
-
-package org.fdroid.fdroid.net;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.support.v4.content.LocalBroadcastManager;
-import android.test.ServiceTestCase;
-import android.util.Log;
-
-@SuppressWarnings("PMD")  // TODO port this to JUnit 4 semantics
-public class DownloaderServiceTest extends ServiceTestCase<DownloaderService> {
-    public static final String TAG = "DownloaderServiceTest";
-
-    String[] urls = {
-            "https://en.wikipedia.org/wiki/Index.html",
-            "https://mirrors.kernel.org/debian/dists/stable/Release",
-            "https://f-droid.org/archive/de.we.acaldav_5.apk",
-            // sites that use SNI for HTTPS
-            "https://guardianproject.info/fdroid/repo/index.jar",
-    };
-
-    public DownloaderServiceTest() {
-        super(DownloaderService.class);
-    }
-
-    public void testQueueingDownload() throws InterruptedException {
-        LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance(getContext());
-        localBroadcastManager.registerReceiver(new BroadcastReceiver() {
-            @Override
-            public void onReceive(Context context, Intent intent) {
-                Log.i(TAG, "onReceive " + intent);
-            }
-        }, new IntentFilter(Downloader.ACTION_PROGRESS));
-        for (String url : urls) {
-            DownloaderService.queue(getContext(), null, url);
-        }
-        Thread.sleep(30000);
-    }
-}

app/src/main/java/org/fdroid/fdroid/net/DownloaderService.java

@@ -302,6 +302,10 @@ public class DownloaderService extends Service {
         downloader = null;
     }
 
+    /**
+     * Post a notification about a completed download.  {@code packageName} must be a valid
+     * and currently in the app index database.
+     */
     private void notifyDownloadComplete(String packageName, String urlString) {
         String title;
         try {