Update alpine-adguard-v5.sh

ct/alpine-adguard-v5.sh

@@ -27,7 +27,6 @@ var_os="alpine"
 var_version="3.17"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+([.][0-9]+)?$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")