remove unused repo to increase CI (PaddlePaddle#1205)

* remove unused repo to increase CI

* remove three repos

Author: luotao1

.gitmodules

@@ -1,15 +1,6 @@
 [submodule "external/book"]
 	path = external/book
 	url = https://github.com/PaddlePaddle/book
-[submodule "external/Anakin"]
-	path = external/Anakin
-	url = https://github.com/PaddlePaddle/Anakin
-[submodule "external/paddle-mobile"]
-	path = external/paddle-mobile
-	url = https://github.com/PaddlePaddle/paddle-mobile
 [submodule "external/Paddle"]
 	path = external/Paddle
 	url = https://github.com/PaddlePaddle/Paddle
-[submodule "external/models"]
-	path = external/models
-	url = https://github.com/PaddlePaddle/models

README.md

@@ -6,7 +6,7 @@ English | [简体中文](./README_cn.md)
 FluidDoc consolidates all the documentations related to Paddle. It supplies the contents to PaddlePaddle.org via CI. 
 
 # Architecture
-FluidDoc submodules Paddle, Book, Models, Mobile and Anakin under `external` folder. All submodules should be put under `external` as standard practice. 
+FluidDoc submodules Paddle, Book under `external` folder. All submodules should be put under `external` as standard practice. 
 
 FluidDoc then uses them as references to load up the documents. The FluidDoc constructs the whole doc-tree under the `FluidDoc/doc/fluid` folder. The entry point is `FluidDoc/doc/fluid/index_cn.rst` and `FluidDoc/doc/fluid/index_en.rst`
 
@@ -22,7 +22,7 @@ To preview documents constructured by FluidDoc. Please follow the [regular previ
 # Publish New release
 1. Checkout a new release branch. The branch name should follow `release/<version>`
 1. Update the documentations on the submodules or within FluidDoc
-1. Make sure all the submodules are ready for release. Paddle, book, model, mobile and Anakin should all have stable commits. Note: Paddle repo should update the API RST files accordinly if Paddle changes the included module/classes. 
+1. Make sure all the submodules are ready for release. Paddle, book should all have stable commits. Note: Paddle repo should update the API RST files accordinly if Paddle changes the included module/classes. 
 1. Update the submodules under `external` folder and commit the changes.
 1. Git push the branch to Github, Travis CI will start several builds to publish the documents to the PaddlePaddle.org server
 1. Please notify the PaddlePaddle.org team that the release content is ready. PaddlePaddle.org team should enable the version and update the default version to the latest one. PaddlePaddle.org should also update the search index accordingly (Until the search server is up)

README_cn.md

@@ -9,7 +9,7 @@ FluidDoc包含了所有PaddlePaddle相关的文档，它通过CI系统为PaddleP
 
 # 架构
 
-FluidDoc将Paddle, Book, Models, Mobile and Anakin作为子模块，并放置在 `external` 目录下。按照标准做法，所有的子模块应当置于`external` 目录下
+FluidDoc将Paddle, Book 作为子模块，并放置在 `external` 目录下。按照标准做法，所有的子模块应当置于`external` 目录下
 
 FluidDoc通过引用这些子模块来加载这些Repo中的文档。FluidDoc在 `FluidDoc/doc/fluid` 目录下构建了文档的整体树形结构。可以分别在 `FluidDoc/doc/fluid/index_cn.rst` 和 `FluidDoc/doc/fluid/index_en.rst` 查看。
 
@@ -26,7 +26,7 @@ FluidDoc 需要Paddle Repo的python模块去编译生成API文档。但由于Pad
 ## 发布新的分支
 1. 创建一个新的分支，此分支的名字应遵循`release/<version>`
 1. 在FluidDoc和子模块中更新文档
-1. 确认所有的子模块中处于发布就绪的状态。Paddle, book, model, mobile and Anakin 应全部有稳定的commit
+1. 确认所有的子模块中处于发布就绪的状态。Paddle, book 应全部有稳定的commit
 请注意：如果Paddle Repo更改了module/classes，涉及API文档的RST文件应当也被更新
 1. 在 `external` 中更新文件然后commit文档变更
 1. 将这个分支push到Github，Travis CI将会启动几项构建工作以把文档发布到PaddlePaddle.org的服务器