tests: Temporarily disabled layers

Not all layers updated to support latest loader
CreateInstance and DEBUG_REPORT features so
disable them for now.
diff --git a/tests/layer_validation_tests.cpp b/tests/layer_validation_tests.cpp
index aff46ee..fcea3d3 100644
--- a/tests/layer_validation_tests.cpp
+++ b/tests/layer_validation_tests.cpp
@@ -153,12 +153,13 @@
 
         instance_extension_names.push_back(DEBUG_REPORT_EXTENSION_NAME);
         instance_extension_names.push_back("MemTracker");
-        instance_extension_names.push_back("ObjectTracker");
+        instance_extension_names.push_back("DrawState");
+//        instance_extension_names.push_back("ObjectTracker");
 //        instance_extension_names.push_back("Threading");
 
         device_extension_names.push_back("MemTracker");
-        device_extension_names.push_back("ObjectTracker");
-        device_extension_names.push_back("Threading");
+//        device_extension_names.push_back("ObjectTracker");
+//        device_extension_names.push_back("Threading");
 
         // Force layer output level to be >= WARNING so that we catch those messages but ignore others
         setLayerOptionEnum("MemTrackerReportLevel",    "VK_DBG_LAYER_LEVEL_WARNING");