remove unneeded config.h includes

llvm-svn: 147195
diff --git a/clang/lib/Basic/FileManager.cpp b/clang/lib/Basic/FileManager.cpp
index 274a9a1..5d352fd 100644
--- a/clang/lib/Basic/FileManager.cpp
+++ b/clang/lib/Basic/FileManager.cpp
@@ -25,7 +25,7 @@
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/system_error.h"
-#include "llvm/Config/config.h"
+#include "llvm/Config/llvm-config.h"
 #include <map>
 #include <set>
 #include <string>