Remove a dict.has_key() use in DocXMLRPCServer that comes up under -3.

Lib/DocXMLRPCServer.py

@@ -175,7 +175,7 @@ def generate_html_documentation(self):
         methods = {}
 
         for method_name in self.system_listMethods():
-            if self.funcs.has_key(method_name):
+            if method_name in self.funcs:
                 method = self.funcs[method_name]
             elif self.instance is not None:
                 method_info = [None, None] # argspec, documentation