Remove unused inputs and outputs fields for AppBase (#3485)

Author: arhag23

parsl/app/app.py

@@ -66,8 +66,6 @@ def __init__(self, func: Callable,
             self.kwargs['walltime'] = params['walltime'].default
         if 'parsl_resource_specification' in params:
             self.kwargs['parsl_resource_specification'] = params['parsl_resource_specification'].default
-        self.outputs = params['outputs'].default if 'outputs' in params else []
-        self.inputs = params['inputs'].default if 'inputs' in params else []
 
     @abstractmethod
     def __call__(self, *args: Any, **kwargs: Any) -> AppFuture: