Remove accidental dependency on zookeeper in shutdown_test
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 50f0785..cdd99a9 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -1627,8 +1627,7 @@
       "grpc", 
       "grpc++", 
       "grpc++_test_util", 
-      "grpc_test_util", 
-      "grpc_zookeeper"
+      "grpc_test_util"
     ], 
     "headers": [], 
     "language": "c++",