Update sb.sh

sb.sh

@@ -71,9 +71,8 @@ if [ ! -f sbyg_update ]; then
 green "首次安装Sing-box-yg脚本必要的依赖……"
 if [[ x"${release}" == x"alpine" ]]; then
 apk update
-apk add jq openssl iproute2 iputils coreutils expect git socat iptables grep  util-linux dcron tar tzdata 
+apk add jq openssl iproute2 iputils coreutils expect git socat iptables grep util-linux dcron tar tzdata 
 apk add virt-what
-apk add qrencode
 else
 if [[ $release = Centos && ${vsid} =~ 8 ]]; then
 cd /etc/yum.repos.d/ && mkdir backup && mv *repo backup/