delete install golang env

scripts/build_upf.sh

@@ -57,29 +57,6 @@ function make_package()
    sudo mv $VPPPATH/$vpp_tar_gz $VPPINSTALL
 }
 
-function install_golang() {
-   rm -rf /tmp/go1.15.6.linux-amd64.tar.*
-   wget -P /tmp https://studygolang.com/dl/golang/go1.15.6.linux-amd64.tar.gz
-   rm -rf $base/go
-   mkdir -p $base/go
-   tar xvf /tmp/go1.15.6.linux-amd64.tar.gz -C /usr/local
-
-   sed -i -e '/GOROOT/d' ~/.bashrc
-   sed -i -e '/GOBIN/d' ~/.bashrc
-   sed -i -e '/GOPATH/d' ~/.bashrc
-   sed -i -e '/GO111MODULE/d' ~/.bashrc
-   sed -i -e '/GOPROXY/d' ~/.bashrc
-
-   echo "export GOROOT=\"/usr/local/go\"" >> ~/.bashrc
-   echo "export GOBIN=\"/usr/local/go/bin\"" >> ~/.bashrc
-   echo "export GOPATH=\"$base/go\"" >> ~/.bashrc
-   echo "export PATH=\$PATH:\$GOBIN"  >> ~/.bashrc
-   echo "export GO111MODULE=on" >> ~/.bashrc
-   echo "export GOPROXY=https://goproxy.cn" >> ~/.bashrc
-   source ~/.bashrc
-}
-
-
 function n4(){
    echo  "start build 5GN4"
    cd $N4SRC
@@ -110,7 +87,6 @@ function help()
   echo " "
   echo "Usage: build_upf [OPTION]..."
   echo "--pre_install     Pre-installation of dependencies required by UPF"
-  echo "--install_golang  Configure golang's compilation environment"
   echo "--vpp             Build  vpp"
   echo "--n4              Build  N4"
   echo "--c               Remove files generated by previous compilation "
@@ -136,12 +112,8 @@ function main() {
       pre_install
       shift
       ;;
-    --install_golang)
-      install_golang
-      shift
-      ;;      
-    --vpp)
-      vpp
+     --vpp)
+      vpp	     
       shift
       ;;
     --n4)