remove beam_search and beam_search_decode api in paddle.nn (#27660)

python/paddle/nn/__init__.py

@@ -44,8 +44,8 @@ from .control_flow import while_loop  #DEFINE_ALIAS
 # from .control_flow import rnn        #DEFINE_ALIAS
 # from .decode import BeamSearchDecoder        #DEFINE_ALIAS
 # from .decode import Decoder        #DEFINE_ALIAS
-from .decode import beam_search  #DEFINE_ALIAS
-from .decode import beam_search_decode  #DEFINE_ALIAS
+# from .decode import beam_search  #DEFINE_ALIAS
+# from .decode import beam_search_decode  #DEFINE_ALIAS
 # from .decode import crf_decoding        #DEFINE_ALIAS
 # from .decode import ctc_greedy_decoder        #DEFINE_ALIAS
 # from .decode import dynamic_decode        #DEFINE_ALIAS

python/paddle/nn/decode.py

@@ -13,16 +13,16 @@
 # limitations under the License.
 
 # TODO: define api to implement decoding algorithm  
-from ..fluid.layers import beam_search  #DEFINE_ALIAS
-from ..fluid.layers import beam_search_decode  #DEFINE_ALIAS
+# from ..fluid.layers import beam_search  #DEFINE_ALIAS
+# from ..fluid.layers import beam_search_decode  #DEFINE_ALIAS
 
 from ..fluid.layers import gather_tree  #DEFINE_ALIAS
 
 __all__ = [
     #       'BeamSearchDecoder',
     #       'Decoder',
-    'beam_search',
-    'beam_search_decode',
+    #       'beam_search',
+    #       'beam_search_decode',
     #       'crf_decoding',
     #       'ctc_greedy_decoder',
     #       'dynamic_decode',