Fix include lint

Author: rnk

clang/unittests/Frontend/OutputStreamTest.cpp

@@ -8,13 +8,12 @@
 
 #include "clang/Basic/LangStandard.h"
 #include "clang/CodeGen/BackendUtil.h"
-#include "clang/CodeGen/CodeGenAction.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "clang/FrontendTool/Utils.h"
 #include "clang/Lex/PreprocessorOptions.h"
-#include "llvm/Support/VirtualFileSystem.h"
 #include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/VirtualFileSystem.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;