Delete unnecessary explanations

paddle/scripts/paddle_build.sh

@@ -432,24 +432,6 @@ EOF
     linkchecker doc/v2/cn/html/index.html
     linkchecker doc/v2/api/en/html/index.html
 
-#    if [[ "$TRAVIS_PULL_REQUEST" != "false" ]]; then exit 0; fi;
-#
-#    # Deploy to the the content server if its a "develop" or "release/version" branch
-#    # The "develop_doc" branch is reserved to test full deploy process without impacting the real content.
-#    if [ "$TRAVIS_BRANCH" == "develop_doc" ]; then
-#        PPO_SCRIPT_BRANCH=develop
-#    elif [[ "$TRAVIS_BRANCH" == "develop"  ||  "$TRAVIS_BRANCH" =~ ^v|release/[[:digit:]]+\.[[:digit:]]+(\.[[:digit:]]+)?(-\S*)?$ ]]; then
-#        PPO_SCRIPT_BRANCH=master
-#    else
-#        # Early exit, this branch doesn't require documentation build
-#        return 0;
-#    fi
-#     # Fetch the paddlepaddle.org deploy_docs.sh from the appopriate branch
-#    export DEPLOY_DOCS_SH=https://raw.githubusercontent.com/PaddlePaddle/PaddlePaddle.org/$PPO_SCRIPT_BRANCH/scripts/deploy/deploy_docs.sh
-#    export PYTHONPATH=$PYTHONPATH:${PADDLE_ROOT}/build/python:/paddle/build/python
-#    cd ..
-#    curl $DEPLOY_DOCS_SH | bash -s $CONTENT_DEC_PASSWD $TRAVIS_BRANCH ${PADDLE_ROOT} ${PADDLE_ROOT}/build/doc/ ${PPO_SCRIPT_BRANCH}
-#    cd -
 }
 
 function gen_doc_lib() {