Remove 'return_numpy' from TableRowClassifier API

[haesleinhuepf]

I'd like to get rid of the return_numpy parameter here, because:

Instead of this:

result_numpy = table_row_classifier.predict(table, return_numpy=True)

A user could run this:

result_numpy = np.asarray( table_row_classifier.predict(table) )

The second appears more standard to me and it simplifies the API. The other classifers also don't have this parameter.

@kevinyamauchi what do you think about this? Would it be ok to remove it immediately or shall we use some deprecation mechanism? I guess you and me might be the only users as this is relatively young functionality?

[kevinyamauchi]

Hello @haesleinhuepf ! That is fine with me. No deprecation notice required :)