[LoopUnrollAndJamPass] Clean unnecessary includes. [NFCI]

#ifndef LLVM_TRANSFORMS_SCALAR_LOOPUNROLLANDJAMPASS_H

#define LLVM_TRANSFORMS_SCALAR_LOOPUNROLLANDJAMPASS_H

#include "llvm/Analysis/LoopAnalysisManager.h"

#include "llvm/Analysis/LoopInfo.h"

#include "llvm/IR/PassManager.h"

namespace llvm {

class Function;

/// A simple loop rotation transformation.

class LoopUnrollAndJamPass : public PassInfoMixin<LoopUnrollAndJamPass> {

  const int OptLevel;