Update 1_Utilities/README.md to redirect bandwidthTest to NVBandwidth (#371)

Samples/1_Utilities/README.md

@@ -1,9 +1,5 @@
 # 1. Utilities
 
-
-### [bandwidthTest](./bandwidthTest)
-This is a simple test program to measure the memcopy bandwidth of the GPU and memcpy bandwidth across PCI-e. This test application is capable of measuring device to device copy bandwidth, host to device copy bandwidth for pageable and page-locked memory, and device to host copy bandwidth for pageable and page-locked memory.
-
 ### [deviceQuery](./deviceQuery)
 This sample enumerates the properties of the CUDA devices present in the system.
 
@@ -12,3 +8,8 @@ This sample enumerates the properties of the CUDA devices present using CUDA Dri
 
 ### [topologyQuery](./topologyQuery)
 A simple example on how to query the topology of a system with multiple GPU
+
+## Note
+
+### bandwidthTest
+The bandwidthTest sample was out-of-date and has been removed as of the CUDA Samples 12.9 release (see the [change log](../../CHANGELOG.md)). For up-to-date bandwidth measurements, refer instead to the [NVBandwith](https://github.com/nvidia/nvbandwidth) utility.