linux - Removing Unnecessary Services & Packages in a MySQL Ubuntu 12.04 Server

As part of hardening a standalone/dedicated MySQL 5.6 server running on Ubuntu 12.04 LTS, unnecessary services and packages will have to be removed.

For a server that is serving only as a MySQL server, what services and packages should we remove? Is there a list of services/packages that we can use?

Here's a list of services running (?). Which are the ones them look like they could be stopped and their packages removed?

[ ? ]  acpid
[ ? ]  anacron
[ ? ]  atd
[ - ]  bootlogd
[ ? ]  console-setup
[ ? ]  cron

[ ? ]  cryptdisks
[ ? ]  cryptdisks-early
[ ? ]  cryptdisks-enable
[ ? ]  cryptdisks-udev
[ ? ]  dbus
[ ? ]  dmesg
[ - ]  grub-common
[ ? ]  hostname
[ ? ]  hwclock
[ ? ]  hwclock-save

[ - ]  keymap.sh
[ ? ]  killprocs
[ ? ]  module-init-tools
[ ? ]  network-interface
[ ? ]  network-interface-container
[ ? ]  network-interface-security
[ ? ]  networking
[ ? ]  ondemand
[ ? ]  passwd
[ ? ]  plymouth

[ ? ]  plymouth-log
[ ? ]  plymouth-ready
[ ? ]  plymouth-splash
[ ? ]  plymouth-stop
[ ? ]  plymouth-upstart-bridge
[ ? ]  procps
[ ? ]  rc.digitalocean
[ ? ]  rc.local
[ ? ]  resolvconf
[ - ]  rsync

[ ? ]  rsyslog
[ ? ]  sendsigs
[ ? ]  setvtrgb
[ + ]  ssh
[ - ]  stop-bootlogd
[ - ]  stop-bootlogd-single
[ ? ]  sudo
[ ? ]  udev
[ ? ]  udev-fallback-graphics
[ ? ]  udev-finish

[ ? ]  udevmonitor
[ ? ]  udevtrigger
[ ? ]  umountfs
[ ? ]  umountnfs.sh
[ ? ]  umountroot
[ - ]  unattended-upgrades
[ - ]  urandom

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