ethernet: reenable testUpdateConfiguration_forOnlyCapabilities

Reenabling the test since b/240323229 has been fixed.

Test: TH
Bug: 240323229
Change-Id: I061d961c66084ada24e12a78dc9b973e075c1286
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index f1a6d92..b959c73 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -78,7 +78,6 @@
 import org.junit.Assume.assumeFalse
 import org.junit.Assume.assumeTrue
 import org.junit.Before
-import org.junit.Ignore
 import org.junit.Test
 import org.junit.runner.RunWith
 import java.net.Inet6Address
@@ -900,9 +899,6 @@
                 STATIC_IP_CONFIGURATION.staticIpConfiguration.ipAddress!!)
     }
 
-    // TODO(b/240323229): This test is currently flaky due to a race between IpClient restarting and
-    // NetworkAgent tearing down the routes. This problem is exacerbated by disabling RS delay.
-    @Ignore
     @Test
     fun testUpdateConfiguration_forOnlyCapabilities() {
         val iface = createInterface()