gh-134012: Simplify IPv*Interface.__hash__()

The value of `self._ip` and `int(self.network.network_address)` will
always be the identical. Therefore, it's unnecessary to include
`int(self.network.network_address)` in the tuple used to compute the
hash.

Author: mssalvatore

Lib/ipaddress.py

@@ -1456,7 +1456,7 @@ def __lt__(self, other):
             return False
 
     def __hash__(self):
-        return hash((self._ip, self._prefixlen, int(self.network.network_address)))
+        return hash((self._ip, self._prefixlen))
 
     __reduce__ = _IPAddressBase.__reduce__
 
@@ -2233,7 +2233,7 @@ def __lt__(self, other):
             return False
 
     def __hash__(self):
-        return hash((self._ip, self._prefixlen, int(self.network.network_address)))
+        return hash((self._ip, self._prefixlen))
 
     __reduce__ = _IPAddressBase.__reduce__