Use a more general test here.

The interesting bit about that triple isn't the architecture, it's the
fact that ps4 implies C99 as the standard rather than a newer C mode.
Specify the language standard rather than the triple so the test is a
bit more general.

clang/test/Lexer/unicode.c

@@ -1,6 +1,6 @@
 // RUN: %clang_cc1 -fsyntax-only -verify -x c -std=c11 %s
 // RUN: %clang_cc1 -fsyntax-only -verify -x c++ -std=c++11 %s
-// RUN: %clang_cc1 -triple x86_64-scei-ps4 -E -DPP_ONLY=1 %s | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c99 -E -DPP_ONLY=1 %s | FileCheck %s --strict-whitespace
 // RUN: %clang_cc1 -E -DPP_ONLY=1 %s | FileCheck %s --strict-whitespace
 
 // This file contains Unicode characters; please do not "fix" them!