Removing cuda stream view include from mdarray (#1429)

cc @wphicks

Authors:
  - Corey J. Nolet (https://github.com/cjnolet)

Approvers:
  - Divye Gala (https://github.com/divyegala)

URL: #1429

cpp/include/raft/core/mdarray.hpp

@@ -29,7 +29,6 @@
 #include <raft/core/mdspan.hpp>
 #include <raft/core/mdspan_types.hpp>
 #include <raft/core/memory_type.hpp>
-#include <rmm/cuda_stream_view.hpp>
 
 namespace raft {
 /**
@@ -45,11 +44,11 @@ namespace raft {
 template <typename Base>
 class array_interface {
   /**
-   * @brief Get a mdspan that can be passed down to CUDA kernels.
+   * @brief Get an mdspan
    */
   auto view() noexcept { return static_cast<Base*>(this)->view(); }
   /**
-   * @brief Get a mdspan that can be passed down to CUDA kernels.
+   * @brief Get an mdspan<const T>
    */
   auto view() const noexcept { return static_cast<Base*>(this)->view(); }
 };
@@ -108,7 +107,8 @@ inline constexpr bool is_array_interface_v = is_array_interface<Tn...>::value;
  *   template.
  *
  * - Most of the constructors from the reference implementation is removed to make sure
- *   CUDA stream is honorred.
+ *   CUDA stream is honored. Note that this class is not coupled to CUDA and therefore
+ *   will only be used in the case where the device variant is used.
  *
  * - unique_size is not implemented, which is still working in progress in the proposal
  *
@@ -220,11 +220,11 @@ class mdarray
 #undef RAFT_MDARRAY_CTOR_CONSTEXPR
 
   /**
-   * @brief Get a mdspan that can be passed down to CUDA kernels.
+   * @brief Get an mdspan
    */
   auto view() noexcept { return view_type(c_.data(), map_, cp_.make_accessor_policy()); }
   /**
-   * @brief Get a mdspan that can be passed down to CUDA kernels.
+   * @brief Get an mdspan<const T>
    */
   auto view() const noexcept
   {