Removed class variable, redundant.

The ServerInfo.address class variable is redundant.

The address is set per class instanse, self.address

Author: martin-neotech

neo4j/api.py

@@ -108,8 +108,6 @@ def __bool__(self):
 
 class ServerInfo:
 
-    address = None
-
     def __init__(self, address, protocol_version):
         self.address = address
         self.protocol_version = protocol_version