Remove verbose docstring Notes section per code review feedback

Co-authored-by: leofang <5534781+leofang@users.noreply.github.com>

Author: Copilot

cuda_core/cuda/core/experimental/_memory.py

@@ -318,13 +318,6 @@ class DeviceMemoryResource(MemoryResource):
         Device ordinal for which a memory resource is constructed. The mempool that is
         set to *current* on ``device_id`` is used. If no mempool is set to current yet,
         the driver would use the *default* mempool on the device.
-
-    Notes
-    -----
-    During initialization, this class automatically configures the memory pool's release
-    threshold for improved performance. If the current threshold is 0 (default), it is
-    set to the maximum value to prevent immediate memory release when there are no active
-    allocations, which can cause performance degradation.
     """
 
     __slots__ = ("_dev_id",)