Update files that were mistakenly added with the old file header.

llvm-svn: 353664

Author: chandlerc

llvm/unittests/CodeGen/TypeTraitsTest.cpp

@@ -1,9 +1,8 @@
 //===- llvm/unittest/CodeGen/TypeTraitsTest.cpp --------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//