layers: Revert "Prevent layer calls with null ..."

Incomplete solution, with new null derefence side affects.

This reverts commit 9652bf9ce450f79ccf69de911a9744a8d7ed6222.

Change-Id: I5530fd496d3495bc9863ddaf709b32c6f7b95329
diff --git a/layers/object_tracker_utils.cpp b/layers/object_tracker_utils.cpp
index 6801e66..54d7b8c 100644
--- a/layers/object_tracker_utils.cpp
+++ b/layers/object_tracker_utils.cpp
@@ -843,7 +843,7 @@
 
     layer_data *device_data = GetLayerDataPtr(get_dispatch_key(*pDevice), layer_data_map);
     device_data->report_data = layer_debug_utils_create_device(phy_dev_data->report_data, *pDevice);
-    layer_init_device_dispatch_table(*pDevice, &device_data->device_dispatch_table, fpGetDeviceProcAddr, &name_to_funcptr_map);
+    layer_init_device_dispatch_table(*pDevice, &device_data->device_dispatch_table, fpGetDeviceProcAddr);
 
     // Save pCreateInfo device extension list for GetDeviceProcAddr()
     for (uint32_t extn = 0; extn < pCreateInfo->enabledExtensionCount; extn++) {