stream: Remove set decode_unicode

This doesn't handle well with every unicode strings, let only json.loads() do the decode instead.

shodan/stream.py

@@ -63,7 +63,7 @@ def _create_stream(self, name, query=None, timeout=None):
         return req
 
     def _iter_stream(self, stream, raw):
-        for line in stream.iter_lines(decode_unicode=True):
+        for line in stream.iter_lines():
             # The Streaming API sends out heartbeat messages that are newlines
             # We want to ignore those messages since they don't contain any data
             if line: