That’s not a “word” that is the representation of the numpy-datatype and you cannot remove that other than changing the datatype - as you did with .tolist()
The reason you cannot change it, is because Python lists are a completly different type of object within the code and behaves entirely different. So the creators of Numpy made sure you can see their “array” is different from a Python list.
Hence you need to cast the Numpy array into a Python list. That’s the cleanest solution.