Revert "clang-format"

This reverts commit 0a37e9c3d88a2e21863657df2f7735fb7e5f746e.

llvm-svn: 346944
diff --git a/clang-tools-extra/clangd/index/Background.cpp b/clang-tools-extra/clangd/index/Background.cpp
index a972454..69399ba 100644
--- a/clang-tools-extra/clangd/index/Background.cpp
+++ b/clang-tools-extra/clangd/index/Background.cpp
@@ -24,10 +24,10 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/SHA1.h"
-#include <memory>
-#include <queue>
 #include <random>
 #include <string>
+#include <queue>
+#include <memory>
 
 using namespace llvm;
 namespace clang {