fix PEP8 too many blank lines

Author: simonmulser

bitcoin/rpc.py

@@ -192,7 +192,6 @@ def __init__(self,
         self.__conn = httplib.HTTPConnection(self.__url.hostname, port=port,
                                              timeout=timeout)
 
-
     def _call(self, service_name, *args):
         self.__id_count += 1
 
@@ -215,7 +214,6 @@ def _call(self, service_name, *args):
         else:
             return response['result']
 
-
     def _batch(self, rpc_call_list):
         postdata = json.dumps(list(rpc_call_list))
         self.__conn.request('POST', self.__url.path, postdata,