[IR] Don't include GenericDomTreeConstruction.h in header (NFC)

The whole point of the GenericDomTree.h vs
GenericDomTreeConstruction.h distinction is that the latter only
needs to be included in the source file and not the header.

llvm/include/llvm/IR/Dominators.h

@@ -33,7 +33,6 @@
 #include "llvm/Support/CFGDiff.h"
 #include "llvm/Support/CFGUpdate.h"
 #include "llvm/Support/GenericDomTree.h"
-#include "llvm/Support/GenericDomTreeConstruction.h"
 #include <algorithm>
 #include <utility>
 #include <vector>

llvm/lib/CodeGen/AssignmentTrackingAnalysis.cpp

@@ -25,6 +25,7 @@
 #include <assert.h>
 #include <cstdint>
 #include <optional>
+#include <queue>
 #include <sstream>
 #include <unordered_map>
 

llvm/lib/IR/Dominators.cpp

@@ -25,6 +25,7 @@
 #include "llvm/PassRegistry.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/GenericDomTreeConstruction.h"
 #include "llvm/Support/raw_ostream.h"
 
 #include <cassert>

llvm/lib/Transforms/Vectorize/VectorCombine.cpp

@@ -30,6 +30,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Transforms/Utils/Local.h"
 #include <numeric>
+#include <queue>
 
 #define DEBUG_TYPE "vector-combine"
 #include "llvm/Transforms/Utils/InstructionWorklist.h"

llvm/tools/llvm-reduce/deltas/ReduceOperandsSkip.cpp

@@ -14,6 +14,7 @@
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Operator.h"
+#include <queue>
 
 using namespace llvm;