remove print func here due to UnicodeEncodeError

[bqwu]

When I am using the trained NER model as service via http port, I found if the input json is something like
query_json = {
"id": 100,
"texts": ["Beijing"]
},
everything is right. However, if the input json is something like
query_json = {
"id": 100,
"texts": ["北京"]
},
then it raises Exception as below:
UnicodeEncodeError: 'ascii' codec can't encode characters in position 23-25: ordinal not in range(128)
I found this error comes from this print func and I think it should be removed here. In hanxiao's Bert-as-service, it does not contain this line (https://github.com/hanxiao/bert-as-service/blob/91bff1c2d0403e1afa9ee1af9dd9cb0dd58fe0d3/server/bert_serving/server/http.py#L57) and it supports Chinese well.
So I suggest removing this print func here.

[bqwu]

Hope the author can release a new version for use later. Thanks so much.