Remove supports_streams from cuDF custom memory resources. (#14857)

Part of rapidsai/rmm#1389. This removes now-optional and soon-to-be deprecated `supports_streams()` from cuDF's custom `device_memory_resource` implementations.

Depends on rapidsai/rmm#1437

Authors:
  - Mark Harris (https://github.com/harrism)
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Nghia Truong (https://github.com/ttnghia)
  - Bradley Dice (https://github.com/bdice)
  - Yunsong Wang (https://github.com/PointKernel)
  - Michael Schellenberger Costa (https://github.com/miscco)

URL: #14857

cpp/include/cudf_test/stream_checking_resource_adaptor.hpp

@@ -64,13 +64,6 @@ class stream_checking_resource_adaptor final : public rmm::mr::device_memory_res
    */
   Upstream* get_upstream() const noexcept { return upstream_; }
 
-  /**
-   * @brief Checks whether the upstream resource supports streams.
-   *
-   * @return Whether or not the upstream resource supports streams
-   */
-  bool supports_streams() const noexcept override { return upstream_->supports_streams(); }
-
  private:
   /**
    * @brief Allocates memory of size at least `bytes` using the upstream

java/src/main/native/src/RmmJni.cpp

@@ -96,8 +96,6 @@ class tracking_resource_adaptor final : public base_tracking_resource_adaptor {
     return scoped_max_total_allocated;
   }
 
-  bool supports_streams() const noexcept override { return resource->supports_streams(); }
-
 private:
   Upstream *const resource;
   std::size_t const size_align;
@@ -207,8 +205,6 @@ class java_event_handler_memory_resource : public device_memory_resource {
 
   device_memory_resource *get_wrapped_resource() { return resource; }
 
-  bool supports_streams() const noexcept override { return resource->supports_streams(); }
-
 private:
   device_memory_resource *const resource;
   base_tracking_resource_adaptor *const tracker;