move #include to the file that needs it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48485 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Lex/PPMacroExpansion.cpp

@@ -18,6 +18,7 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/Diagnostic.h"
+#include <ctime>
 using namespace clang;
 
 /// setMacroInfo - Specify a macro for this identifier.

lib/Lex/Preprocessor.cpp

@@ -36,7 +36,6 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Streams.h"
-#include <ctime>
 using namespace clang;
 
 //===----------------------------------------------------------------------===//