Update run_v1_only test with proper reason.

PiperOrigin-RevId: 322164638
Change-Id: I17ffbc5c396c8fa97e2a4dff8ada380795c52ba2

tensorflow/python/training/server_lib_same_variables_no_clear_test.py

@@ -34,7 +34,8 @@ class SameVariablesNoClearTest(test.TestCase):
   # TODO(b/34465411): Starting multiple servers with different configurations
   # in the same test is flaky. Move this test case back into
   # "server_lib_test.py" when this is no longer the case.
-  @test_util.run_v1_only("b/120545219")
+  @test_util.run_v1_only(
+      "This exercises tensor lookup via names which is not supported in V2.")
   def testSameVariablesNoClear(self):
     server = server_lib.Server.create_local_server()