java_gen/java_model: do not memoize enum.get_all_values (arg not hashable)
diff --git a/java_gen/java_model.py b/java_gen/java_model.py
index 59df72a..32a4c0e 100644
--- a/java_gen/java_model.py
+++ b/java_gen/java_model.py
@@ -488,6 +488,5 @@
         res = self.version_value_map[version]
         return res
 
-    @memoize
     def all_values(self, versions, not_present=None):
         return [ self.values[version] if version in self.values else not_present for version in versions ]