Trying to UNINSTALL_SHORTCUT but shortcut won't go away

Question

I created a test Activity that installs a shortcut of itself on the Android Home screen. When you click a button, the Activity is supposed to remove the same shortcut it just created. However, nothing I do seems to delete the shortcut.

Here is the Java code (ShortcutTest.java):

import java.net.URISyntaxException;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class ShortcutTest extends Activity {
    String shortcutUri;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        addShortcut(getBaseContext());

        Button button = (Button)findViewById(R.id.Button01);
        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                removeShortcut(getBaseContext());
                finish();
            }
        });
    }

    public void addShortcut(Context context) {
        Intent shortcutIntent = new Intent();
        shortcutIntent.setClassName("com.telespree.android.client", "com.telespree.android.client.ShortcutTest");
        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        Intent intent = new Intent();
        intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
        intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, "ShortcutTest");
        intent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(context, R.drawable.icon));
        intent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
        shortcutUri = intent.toUri(MODE_WORLD_WRITEABLE);
        context.sendBroadcast(intent);
    }

    public void removeShortcut(Context context) {
        Intent intent = null;
        try {
            intent = Intent.parseUri(shortcutUri, 0);
        } catch (URISyntaxException e) {
        }
        intent.setAction("com.android.launcher.permission.UNINSTALL_SHORTCUT");
        context.sendBroadcast(intent);
    }
}

Here is the Manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.telespree.android.client"
      android:versionCode="1"
      android:versionName="1.0">

      <permission
        android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT"
        android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
        android:protectionLevel="normal"
        />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".ShortcutTest"
                  android:label="@string/app_name" android:theme="@android:style/Theme.Translucent">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT"/>
    <!-- 
    <uses-permission android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT"/>
     -->

    <uses-sdk android:minSdkVersion="7" />

</manifest> 

I'm almost positive there is some kind of permissions problem, though I've seen other posts on the Internet that indicates this should be possible.

Any advice is greatly appreciated.

Thanks.