Fix mypy error in import statement used in cutlass_gemm example

Author: oleksandr-pavlyk

python/examples/cutlass_gemm.py

@@ -19,12 +19,11 @@
 
 import cuda.bindings.driver as driver
 import cuda.core.experimental as core
+import cuda.nvbench as nvbench
 import cupy as cp
 import cutlass
 import numpy as np
 
-import nvbench
-
 
 def as_bindings_Stream(cs: nvbench.CudaStream) -> driver.CUstream:
     return driver.CUstream(cs.addressof())