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/parameter_validation_utils.cpp b/layers/parameter_validation_utils.cpp
index a631a2d..e14cf10 100644
--- a/layers/parameter_validation_utils.cpp
+++ b/layers/parameter_validation_utils.cpp
@@ -625,7 +625,7 @@
             assert(my_device_data != nullptr);
 
             my_device_data->report_data = layer_debug_utils_create_device(my_instance_data->report_data, *pDevice);
-            layer_init_device_dispatch_table(*pDevice, &my_device_data->dispatch_table, fpGetDeviceProcAddr, &name_to_funcptr_map);
+            layer_init_device_dispatch_table(*pDevice, &my_device_data->dispatch_table, fpGetDeviceProcAddr);
 
             my_device_data->api_version = api_version;
             my_device_data->extensions = extensions;