Fix previous commit

kernel/modelverse_kernel/request_handler.py

@@ -19,9 +19,6 @@ class GeneratorStackEntry(object):
         self.finished_requests = True
         self.replies = None
 
-    def __getattr__(self, varname):
-        return None
-
 def format_stack_trace(stack_trace):
     """Formats a list of (function name, debug info, origin) triples."""
     return '\n'.join([jit_runtime.format_stack_frame(*triple) for triple in stack_trace])