Use external/robolectric-shadows/run_robotests.mk

This allows Settings to test against the latest framework changes.

Also replaced TestConfig with traditional robolectric.properties.

Bug: 73173204
Bug: 73892008
Test: make -j56 RunSettingsRoboTests
Change-Id: I3135b4fa5f095ba79b282a76f45dd9baa2584bc7

tests/robotests/src/com/android/settings/HelpTrampolineTest.java

@@ -16,6 +16,8 @@
 
 package com.android.settings;
 
+import static com.google.common.truth.Truth.assertThat;
+import static org.robolectric.Shadows.shadowOf;
 
 import android.content.Intent;
 
@@ -30,14 +32,8 @@ import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 import org.robolectric.shadows.ShadowActivity;
 
-import static com.google.common.truth.Truth.assertThat;
-import static org.robolectric.Shadows.shadowOf;
-
 @RunWith(SettingsRobolectricTestRunner.class)
-@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION,
-        shadows = {
-                ShadowHelpUtils.class
-        })
+@Config(shadows = ShadowHelpUtils.class)
 public class HelpTrampolineTest {
 
     @After