Revert "Add back image used by Debian census"

This reverts commit d7d0dfd9.

The patch was ineffective and thus being reverted to ensure we don't build
up cruft.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

static/images/2/27/README

-This file is used on the Debian Census:
-
-https://wiki.debian.org/Derivatives/Census/Apertis
-
-Do not remove!