NOJIRA: Remove warning filter

* This overrode user's warning filters.
* This was (arguably) erroneously added to warn users of deprecations.
   However, DeprecationWarnings are intentionally ignored by default in
   Python.

Author: KennyChenBasis

rosette/api.py

@@ -24,7 +24,6 @@
 import sys
 import os
 import re
-import warnings
 import requests
 import platform
 
@@ -46,8 +45,6 @@
 else:
     _GZIP_SIGNATURE = str(_GZIP_BYTEARRAY)
 
-warnings.simplefilter('always')
-
 
 class _ReturnObject(object):