hybrid, ratbox: remove extban definitions

protocols/hybrid.py

@@ -60,6 +60,7 @@ class HybridProtocol(TS6Protocol):
         }
 
         self.umodes = umodes
+        self.extbans_matching.clear()
 
         # halfops is mandatory on Hybrid
         self.prefixmodes = {'o': '@', 'h': '%', 'v': '+'}

protocols/ratbox.py

@@ -44,6 +44,8 @@ class RatboxProtocol(TS6Protocol):
             '*A': '', '*B': '', '*C': '', '*D': 'igoabcCdfklrsuwxyzZD'
         }
 
+        self.extbans_matching.clear()
+
     def spawn_client(self, nick, ident='null', host='null', realhost=None, modes=set(),
             server=None, ip='0.0.0.0', realname=None, ts=None, opertype=None,
             manipulatable=False):