Update alpine-nextcloud.sh

as suggested by ttekster

ct/alpine-nextcloud.sh

@@ -74,15 +74,9 @@ function update_script() {
     header_info
     case $CHOICE in
     1)
-      INSTALLED=$(grep -Rnw '/usr/share/webapps/nextcloud/config/config.php' -e ''\'installed\'' => false,')
-      if [ -z "$INSTALLED" ]
-      then
       apk update && apk upgrade
       su nextcloud -s /bin/sh -c 'php82 /usr/share/webapps/nextcloud/occ upgrade'
       su nextcloud -s /bin/sh -c 'php82 /usr/share/webapps/nextcloud/occ db:add-missing-indices'
-      else
-        msg_error "${APP} not initialized, go to the WebUI and run the Setup-Wizard first.\n"
-      fi
       exit
       ;;
     2)