bug-14538: Remove validation error codes

https://cvs.khronos.org/bugzilla/show_bug.cgi?id=14538
diff --git a/layers/param_checker.cpp b/layers/param_checker.cpp
index 7404119..c93f487 100644
--- a/layers/param_checker.cpp
+++ b/layers/param_checker.cpp
@@ -185,9 +185,9 @@
             return "VK_RESULT_MAX_ENUM";
             break;
         }
-        case VK_ERROR_INVALID_LAYER:
+        case VK_ERROR_LAYER_NOT_PRESENT:
         {
-            return "VK_ERROR_INVALID_LAYER";
+            return "VK_ERROR_LAYER_NOT_PRESENT";
             break;
         }
         case VK_ERROR_INCOMPATIBLE_DRIVER:
@@ -195,11 +195,6 @@
             return "VK_ERROR_INCOMPATIBLE_DRIVER";
             break;
         }
-        case VK_ERROR_MEMORY_UNMAP_FAILED:
-        {
-            return "VK_ERROR_MEMORY_UNMAP_FAILED";
-            break;
-        }
         case VK_ERROR_MEMORY_MAP_FAILED:
         {
             return "VK_ERROR_MEMORY_MAP_FAILED";
@@ -215,11 +210,6 @@
             return "VK_ERROR_OUT_OF_HOST_MEMORY";
             break;
         }
-        case VK_ERROR_UNKNOWN:
-        {
-            return "VK_ERROR_UNKNOWN";
-            break;
-        }
         case VK_ERROR_INITIALIZATION_FAILED:
         {
             return "VK_ERROR_INITIALIZATION_FAILED";
@@ -255,19 +245,14 @@
             return "VK_UNSUPPORTED";
             break;
         }
-        case VK_ERROR_INCOMPATIBLE_DEVICE:
-        {
-            return "VK_ERROR_INCOMPATIBLE_DEVICE";
-            break;
-        }
         case VK_SUCCESS:
         {
             return "VK_SUCCESS";
             break;
         }
-        case VK_ERROR_INVALID_EXTENSION:
+        case VK_ERROR_EXTENSION_NOT_PRESENT:
         {
-            return "VK_ERROR_INVALID_EXTENSION";
+            return "VK_ERROR_EXTENSION_NOT_PRESENT";
             break;
         }
         case VK_ERROR_DEVICE_LOST:
diff --git a/layers/shader_checker.cpp b/layers/shader_checker.cpp
index 632947a..678b567 100644
--- a/layers/shader_checker.cpp
+++ b/layers/shader_checker.cpp
@@ -976,7 +976,7 @@
         return get_dispatch_table(shader_checker_device_table_map, device)->CreateGraphicsPipelines(device, pipelineCache, count, pCreateInfos, pPipelines);
     }
     else {
-        return VK_ERROR_UNKNOWN;
+        return VK_ERROR_VALIDATION_FAILED;
     }
 }