fix criteo ctr with cube doc

python/examples/criteo_ctr_with_cube/README.md

@@ -2,16 +2,6 @@
 
 ([简体中文](./README_CN.md)|English)
 
-### Compile Source Code
-in the root directory of this git project
-```
-mkdir build_server
-cd build_server
-cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib64/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DSERVER=ON ..
-make -j10
-make install -j10
-```
-
 ### Get Sample Dataset
 
 go to directory `python/examples/criteo_ctr_with_cube`

python/examples/criteo_ctr_with_cube/README_CN.md

 ## 带稀疏参数索引服务的CTR预测服务
 (简体中文|[English](./README.md))
 
-### 编译源代码
-在本项目的根目录下，执行
-```
-mkdir build_server
-cd build_server
-cmake -DPYTHON_INCLUDE_DIR=$PYTHONROOT/include/python2.7/ -DPYTHON_LIBRARIES=$PYTHONROOT/lib64/libpython2.7.so -DPYTHON_EXECUTABLE=$PYTHONROOT/bin/python -DSERVER=ON ..
-make -j10
-make install -j10
-```
-
 ### 获取样例数据
 进入目录 `python/examples/criteo_ctr_with_cube`
 ```