Drop write-access

Author: bernhardmgruber

cub/cub/util_type.cuh

@@ -272,11 +272,6 @@ struct FutureValue
     return *m_iter;
   }
 
-  _CCCL_HOST_DEVICE _CCCL_FORCEINLINE operator T&() noexcept
-  {
-    return *m_iter;
-  }
-
 private:
   IterT m_iter;
 };

cub/test/catch2_test_util_type.cu

@@ -118,10 +118,6 @@ C2H_TEST("Test FutureValue", "[util][type]")
   value = 43;
   CHECK(fv == 43);
 
-  // write
-  ++fv;
-  CHECK(value == 44);
-
   // CTAD
   cub::FutureValue fv2{&value};
   STATIC_REQUIRE(::cuda::std::is_same_v<decltype(fv2), cub::FutureValue<int, int*>>);