Revert "Specialized enable_borrowed_ranges for VectorwiseOp class range iteration"

This reverts merge request !2127

Eigen/src/Core/VectorwiseOp.h

@@ -732,14 +732,4 @@ EIGEN_DEVICE_FUNC inline typename DenseBase<Derived>::RowwiseReturnType DenseBas
 
 }  // end namespace Eigen
 
-/* Enable use of VectorwiseOp types inside
- * of std::ranges algorithms. */
-#if defined(__cpp_lib_ranges) && __cpp_lib_ranges >= 201911L
-namespace std {
-template <typename VecwiseOp, Eigen::DirectionType Direction>
-inline constexpr bool ranges::enable_borrowed_range<Eigen::internal::subvector_stl_iterator<VecwiseOp, Direction>> =
-    true;
-}
-#endif
-
 #endif  // EIGEN_PARTIAL_REDUX_H