cancel WITH_DOC and .travis.yml file (#24340)

.travis.yml

-language: cpp
-cache:
-  directories:
-    - $HOME/.ccache
-    - $HOME/.cache/pip
-    - $TRAVIS_BUILD_DIR/build/third_party
-sudo: required
-dist: trusty
-services:
-  - docker
-os:
-  - linux
-env:
-  - JOB=check_style
-addons:
-  ssh_known_hosts: 13.229.163.131
-before_install:
-  # For pylint dockstring checker
-  - sudo pip install pylint pytest astroid isort
-  - |
-    function timeout() { perl -e 'alarm shift; exec @ARGV' "$@"; }
-script:
-  - "travis_wait 30 sleep 1800 &"
-  - |
-    # 43min timeout
-    paddle/scripts/paddle_docker_build.sh ${JOB}
-    if [ $? -eq 0 ] || [ $? -eq 142 ]; then true; else exit 1; fi;
-notifications:
-  email:
-    on_success: change
-    on_failure: always

tools/manylinux1/Dockerfile.GCC8

@@ -8,11 +8,9 @@ MAINTAINER PaddlePaddle Authors <paddle-dev@baidu.com>
 # ENV variables
 ARG WITH_GPU
 ARG WITH_AVX
-ARG WITH_DOC
  
 ENV WITH_GPU=${WITH_GPU:-ON}
 ENV WITH_AVX=${WITH_AVX:-ON}
-ENV WITH_DOC=${WITH_DOC:-OFF}
 
 ENV HOME /root
 # Add bash enhancements

tools/xly_Dockerfile/Dockerfile.GCC8

@@ -14,11 +14,9 @@ RUN /bin/bash -c 'if [[ -n ${UBUNTU_MIRROR} ]]; then sed -i 's#http://security.u
 # ENV variables
 ARG WITH_GPU
 ARG WITH_AVX
-ARG WITH_DOC
  
 ENV WITH_GPU=${WITH_GPU:-ON}
 ENV WITH_AVX=${WITH_AVX:-ON}
-ENV WITH_DOC=${WITH_DOC:-OFF}
 
 ENV HOME /root
 # Add bash enhancements