fix the license header on the spirv-new tests (#1865)

The source files for the spirv-new tests were using the older Khronos
license instead of the proper Apache license.  Fixed the license in
all source files.

test_conformance/spirv_new/test_op_function.cpp

@@ -1,15 +1,18 @@
-/******************************************************************
-Copyright (c) 2016 The Khronos Group Inc. All Rights Reserved.
-
-This code is protected by copyright laws and contains material proprietary to the Khronos Group, Inc.
-This is UNPUBLISHED PROPRIETARY SOURCE CODE that may not be disclosed in whole or in part to
-third parties, and may not be reproduced, republished, distributed, transmitted, displayed,
-broadcast or otherwise exploited in any manner without the express prior written permission
-of Khronos Group. The receipt or possession of this code does not convey any rights to reproduce,
-disclose, or distribute its contents, or to manufacture, use, or sell anything that it may describe,
-in whole or in part other than under the terms of the Khronos Adopters Agreement
-or Khronos Conformance Test Source License Agreement as executed between Khronos and the recipient.
-******************************************************************/
+//
+// Copyright (c) 2016-2023 The Khronos Group Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
 
 #include "testBase.h"
 #include "types.hpp"