Disable crashing  ExternalSourcesSettingsTest#testManageExternalSourcesForApp

Bug: 70383636
Change-Id: If542ef48d54959b3cc6c9fb07ddf07977fe40a8b
diff --git a/tests/unit/src/com/android/settings/applications/ExternalSourcesSettingsTest.java b/tests/unit/src/com/android/settings/applications/ExternalSourcesSettingsTest.java
index 82f0e0a..f7e956b 100644
--- a/tests/unit/src/com/android/settings/applications/ExternalSourcesSettingsTest.java
+++ b/tests/unit/src/com/android/settings/applications/ExternalSourcesSettingsTest.java
@@ -37,6 +37,7 @@
 import android.provider.Settings;
 import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.LargeTest;
+import android.support.test.filters.Suppress;
 import android.support.test.runner.AndroidJUnit4;
 import android.support.test.uiautomator.By;
 import android.support.test.uiautomator.BySelector;
@@ -56,6 +57,7 @@
 
 import java.util.List;
 
+@Suppress
 @RunWith(AndroidJUnit4.class)
 @LargeTest
 public class ExternalSourcesSettingsTest {