@Ignore ConnectivityServiceTest#testRequestBenchmark

Ignore the last remaining test in ConnectivityServiceTest with spurious
failures. testRequestBenchmark has some intrinsic chances of failure due
to the fact it attempts to assert elapsed time durations against a
reference target.

Bug: 32561414
Test: no functional change
Change-Id: Ib25d76581b47997b2ef84df3e6a9fd9224b85d92
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index 00b0f98..4fdbfe7 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -97,6 +97,7 @@
 import com.android.server.connectivity.NetworkMonitor.CaptivePortalProbeResult;
 import com.android.server.net.NetworkPinner;
 
+import org.junit.Ignore;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.mockito.Spy;
@@ -2409,6 +2410,7 @@
         mCm.unregisterNetworkCallback(fgCallback);
     }
 
+    @Ignore // This test has instrinsic chances of spurious failures: ignore for continuous testing.
     @SmallTest
     public void testRequestBenchmark() throws Exception {
         // TODO: turn this unit test into a real benchmarking test.