Remove backup script

Backups are handled elsewhere now

backups/mastodon_db_backup.sh

-#!/bin/bash
-
-# A script which backs up the mastodon database(s)
-set -o pipefail
-set -e
-
-container=db
-backupdir=/opt/backups/postgres
-
-# This performs a cyclic dump to files with the container and date in the name
-# It also creates a link to a file containing the backup sequence number 0 or 1
-# which alternates (computed by modular division from the days since the epoch).
-# Thus by deleting the linked file we can maintain just two backup files.
-backup() {
-  local cname=$1
-  local seqno="$(( $(date +%s) / 86400 % 2 ))"
-  local link="db-backup.$seqno.sql.gz"
-  local file="db-backup.$(date +%F_%R)-${cname}.sql.gz"
-
-  echo "Backing up $cname -> $file @ $(date +%F_%R)"
-  
-  # delete previous backup with same seqno, don't complain if missing
-  rm -f $(readlink -f "$backupdir/$link")
-
-  # create new backup file
-  docker-compose -f /opt/social.coop/sauce/docker/docker-compose.yml exec -T "$cname" pg_dumpall -U postgres -c -v | gzip >"$backupdir/$file"
-  status=$?
-
-  # link the sequence number to it
-  ln -sf "$backupdir/"{"$file","$link"}
-  echo "Done. (Status $status @$(date +%F_%R))"
-}
-
-# Iterate over all matching container names
-#for cname in $(docker container ls -f name=$container --format '{{.Names}}')
-#do 
-  backup $container
-#done