Re-sort #include lines using the llvm/utils/sort_includes.py script.

Removes a duplicate #include as well as cleaning up some sort order
regressions since I last ran the script over Clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171364 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CXComment.cpp b/tools/libclang/CXComment.cpp
index 754f796..d831885 100644
--- a/tools/libclang/CXComment.cpp
+++ b/tools/libclang/CXComment.cpp
@@ -20,12 +20,12 @@
 #include "clang/AST/CommentVisitor.h"
 #include "clang/AST/Decl.h"
 #include "clang/AST/PrettyPrinter.h"
+#include "clang/Format/Format.h"
+#include "clang/Lex/Lexer.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
-#include "clang/Format/Format.h"
-#include "clang/Lex/Lexer.h"
 #include <climits>
 
 using namespace clang;