clean up

doc/fluid/api/api_guides/index.rst

@@ -12,4 +12,3 @@ API使用指南
     low_level/metrics.rst
     low_level/model_save_reader.rst
     low_level/inference.rst
-  

doc/fluid/beginners_guide/index.rst

@@ -31,7 +31,6 @@
     :maxdepth: 2
     
     install/Start.rst
-    api_guides/index.rst
     quick_start/index.rst
     basics/index.rst
     basics/learning_materials.md

doc/fluid/index_cn.rst

@@ -15,4 +15,3 @@
     user_guides/index.rst
     advanced_usage/index.rst
     api/index_cn.rst
-    api/api_guides/index.rst