Revert "Use system-api lib to get badged, shadowed icons(2/n)"

This reverts commit dbecbe6f61.

Reason for revert: b/149112222

Change-Id: I11981b2daacf8b07177fe906d88de05ca40810c1

tests/robotests/src/com/android/settings/testutils/shadow/ShadowUtils.java

@@ -18,10 +18,7 @@ package com.android.settings.testutils.shadow;
 
 import android.content.ComponentName;
 import android.content.Context;
-import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
-import android.graphics.drawable.ColorDrawable;
-import android.graphics.drawable.Drawable;
 import android.hardware.fingerprint.FingerprintManager;
 import android.os.UserHandle;
 import android.os.UserManager;
@@ -147,11 +144,6 @@ public class ShadowUtils {
         return sResultLinks;
     }
 
-    @Implementation
-    protected static Drawable getBadgedIcon(Context context, ApplicationInfo appInfo) {
-        return new ColorDrawable(0);
-    }
-
     public static void setHandledDomains(ArraySet<String> links) {
         sResultLinks = links;
     }