remove unsused headers

Author: charithaintc

mlir/lib/Dialect/Vector/Transforms/VectorDistribute.cpp

@@ -15,13 +15,10 @@
 #include "mlir/Dialect/Vector/IR/VectorOps.h"
 #include "mlir/Dialect/Vector/Transforms/VectorDistribution.h"
 #include "mlir/IR/AffineExpr.h"
-#include "mlir/IR/Value.h"
 #include "mlir/Interfaces/SideEffectInterfaces.h"
 #include "mlir/Transforms/RegionUtils.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Support/FormatVariadic.h"
-#include "llvm/Support/raw_ostream.h"
 #include <utility>
 
 using namespace mlir;