Revert "Ignore new EthernetManager test until prebuilts are updated."

This reverts commit 61408d30f65622311c005227cf69c56ce95ada58.

Reason for revert: Prebuilt is updated and tests should pass
Merged-In: Ic956b5e52575a467b405fecf142c7f25925358d4

Change-Id: I5e0edb8412cedac38b4bac126e4ba62cfb8e198f
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index 293da67..a694f01 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -366,7 +366,6 @@
                 SystemProperties.getInt("service.adb.tcp.port", -1) > -1)
     }
 
-    @Ignore("TODO: temporarily ignore tests until prebuilts are updated")
     @Test
     fun testCallbacks_forServerModeInterfaces() {
         // do not run this test when adb might be connected over ethernet.