Remove unused android.net.Downloads.

It's another set of constants that can be confused with those in
android.provider.Downloads.

Change-Id: I78ac058fa264d59a81f7655ab101c3fb2c8c17ff
diff --git a/services/java/com/android/server/BootReceiver.java b/services/java/com/android/server/BootReceiver.java
index da65438..22874e6 100644
--- a/services/java/com/android/server/BootReceiver.java
+++ b/services/java/com/android/server/BootReceiver.java
@@ -20,13 +20,13 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.net.Downloads;
 import android.os.Build;
 import android.os.DropBoxManager;
 import android.os.FileObserver;
 import android.os.FileUtils;
 import android.os.RecoverySystem;
 import android.os.SystemProperties;
+import android.provider.Downloads;
 import android.util.Slog;
 
 import java.io.File;
@@ -78,9 +78,8 @@
         }.start();
     }
 
-    private void removeOldUpdatePackages(Context ctx) {
-        Downloads.ByUri.removeAllDownloadsByPackage(
-            ctx, OLD_UPDATER_PACKAGE, OLD_UPDATER_CLASS);
+    private void removeOldUpdatePackages(Context context) {
+        Downloads.removeAllDownloadsByPackage(context, OLD_UPDATER_PACKAGE, OLD_UPDATER_CLASS);
     }
 
     private void logBootEvents(Context ctx) throws IOException {