ValueEnumerator.cpp - remove duplicate includes. NFCI.

Remove headers already included in ValueEnumerator.h

lib/Bitcode/Writer/ValueEnumerator.cpp

@@ -11,11 +11,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "ValueEnumerator.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/IR/Argument.h"
-#include "llvm/IR/Attributes.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constant.h"
 #include "llvm/IR/DebugInfoMetadata.h"
@@ -32,7 +30,6 @@
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Use.h"
-#include "llvm/IR/UseListOrder.h"
 #include "llvm/IR/User.h"
 #include "llvm/IR/Value.h"
 #include "llvm/IR/ValueSymbolTable.h"
@@ -42,12 +39,9 @@
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
-#include <cassert>
 #include <cstddef>
 #include <iterator>
 #include <tuple>
-#include <utility>
-#include <vector>
 
 using namespace llvm;