tests/docker: remove ubuntu.docker container

This duplicates the ubuntu2004 container but with an inconsistent set of
packages.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211215141949.3512719-14-berrange@redhat.com>
Message-Id: <20220105135009.1584676-14-alex.bennee@linaro.org>

.gitlab-ci.d/containers.yml

@@ -29,11 +29,6 @@ amd64-ubuntu2004-container:
   variables:
     NAME: ubuntu2004
 
-amd64-ubuntu-container:
-  extends: .container_job_template
-  variables:
-    NAME: ubuntu
-
 amd64-opensuse-leap-container:
   extends: .container_job_template
   variables:

tests/docker/dockerfiles/ubuntu.docker

@@ -1,71 +0,0 @@
-#
-# Latest Ubuntu Release
-#
-# Useful for testing against relatively bleeding edge libraries and
-# compilers. We also have seperate recipe for the most recent LTS
-# release.
-#
-# When updating use the full tag not :latest otherwise the build
-# system won't pick up that it has changed.
-#
-
-FROM docker.io/library/ubuntu:20.04
-ENV PACKAGES \
-    ccache \
-    clang \
-    dbus \
-    gcc \
-    gettext \
-    git \
-    glusterfs-common \
-    libaio-dev \
-    libattr1-dev \
-    libbrlapi-dev \
-    libbz2-dev \
-    libcacard-dev \
-    libcap-ng-dev \
-    libcurl4-gnutls-dev \
-    libdrm-dev \
-    libepoxy-dev \
-    libfdt-dev \
-    libffi-dev \
-    libgbm-dev \
-    libgnutls28-dev \
-    libgtk-3-dev \
-    libibverbs-dev \
-    libiscsi-dev \
-    libjemalloc-dev \
-    libjpeg-turbo8-dev \
-    liblzo2-dev \
-    libncurses5-dev \
-    libncursesw5-dev \
-    libnfs-dev \
-    libnuma-dev \
-    libpixman-1-dev \
-    libpng-dev \
-    librados-dev \
-    librbd-dev \
-    librdmacm-dev \
-    libsasl2-dev \
-    libsdl2-dev \
-    libseccomp-dev \
-    libsnappy-dev \
-    libspice-protocol-dev \
-    libspice-server-dev \
-    libssh-dev \
-    libusb-1.0-0-dev \
-    libusbredirhost-dev \
-    libvdeplug-dev \
-    libvte-2.91-dev \
-    libxen-dev \
-    libzstd-dev \
-    make \
-    ninja-build \
-    python3-yaml \
-    python3-sphinx \
-    python3-sphinx-rtd-theme \
-    sparse \
-    xfslibs-dev
-RUN apt-get update && \
-    DEBIAN_FRONTEND=noninteractive apt-get -y install $PACKAGES
-RUN dpkg -l $PACKAGES | sort > /packages.txt