Use the debian version of mariadb-server

src/freedombone

@@ -6248,8 +6248,6 @@ function install_mariadb {
       return
   fi
   apt-get -y --force-yes install python-software-properties debconf-utils
-  apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db
-  add-apt-repository 'deb http://mariadb.biz.net.id//repo/10.1/debian sid main'
   apt-get -y --force-yes install software-properties-common
   apt-get -y update