[Refactor] Refactorize openicl eval task (open-compass#1990)

* [Refactor] Refactorize openicl eval task

* update

Author: MaiziXiao

opencompass/openicl/icl_evaluator/icl_base_evaluator.py

@@ -91,7 +91,8 @@ def evaluate(
     ):
         # Check if predictions and references have the
         # same length if both are provided
-        if 'predictions' in score_kwargs and 'references' in score_kwargs:
+        if ('predictions' in score_kwargs and 'references' in score_kwargs
+                and score_kwargs['references'] is not None):
             if len(score_kwargs['predictions']) != len(
                     score_kwargs['references']):
                 raise ValueError(

opencompass/tasks/openicl_eval.py

@@ -10,9 +10,7 @@
 from .lark import *  # noqa
 from .logging import *  # noqa
 from .menu import *  # noqa
-from .model_postprocessors import *  # noqa
 from .network import *  # noqa
-from .postprocessors import *  # noqa
 from .prompt import *  # noqa
 from .result_station import *  # noqa
 from .text_postprocessors import *  # noqa