删除混合模型相关的设置

docs/Makefile

@@ -6,7 +6,7 @@ SPHINXOPTS    =
 SPHINXAPIDOC  = sphinx-apidoc
 SPHINXBUILD   = sphinx-build
 SPHINXPROJ    = fastNLP
-SPHINXEXCLUDE = ../fastNLP/transformers/* ../fastNLP/modules/* ../fastNLP/core/drivers/torch_paddle_driver/* ../fastNLP/core/utils/torch_paddle_utils.py
+SPHINXEXCLUDE = ../fastNLP/transformers/*
 SOURCEDIR     = source
 BUILDDIR      = build
 PORT          = 9000