ci: Remove debian/x86_64_pyutils container

Delete the debian/x86_64_pyutils container, since the LAVA jobs no longer
use it.

Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34980>

.gitlab-ci/container/debian/x86_64_pyutils.sh

@@ -1,67 +0,0 @@
-#!/usr/bin/env bash
-# shellcheck disable=SC2086 # we want word splitting
-
-# When changing this file, you need to bump the following
-# .gitlab-ci/image-tags.yml tags:
-# DEBIAN_PYUTILS_TAG
-
-set -e
-
-. .gitlab-ci/setup-test-env.sh
-
-set -o xtrace
-
-export DEBIAN_FRONTEND=noninteractive
-
-apt-get install -y ca-certificates
-sed -i -e 's/http:\/\/deb/https:\/\/deb/g' /etc/apt/sources.list.d/*
-echo "deb [trusted=yes] https://gitlab.freedesktop.org/gfx-ci/ci-deb-repo/-/raw/${PKG_REPO_REV}/ ${FDO_DISTRIBUTION_VERSION%-*} main" | tee /etc/apt/sources.list.d/gfx-ci_.list
-
-# Ephemeral packages (installed for this script and removed again at
-# the end)
-EPHEMERAL=(
-    binutils
-    build-essential
-    cpp
-    dpkg-dev
-    g++
-    gcc
-    libc6-dev
-    perl
-    python3-dev
-)
-
-DEPS=(
-    apt-utils
-    curl
-    file
-    findutils
-    git
-    python3-pil
-    python3-pip
-    python3-ply
-    python3-setuptools
-    python3-venv
-    python3-yaml
-    shellcheck
-    xz-utils
-    yamllint
-    zstd
-)
-
-apt-get update
-
-apt-get install -y --no-remove --no-install-recommends "${DEPS[@]}" "${EPHEMERAL[@]}" \
-        "${EXTRA_LOCAL_PACKAGES:-}"
-
-# Needed for ci-fairy s3cp
-pip3 install --break-system-packages "ci-fairy[s3] @ git+https://gitlab.freedesktop.org/freedesktop/ci-templates@$MESA_TEMPLATES_COMMIT"
-
-pip3 install --break-system-packages -r bin/ci/test/requirements.txt
-
-############### Uninstall ephemeral packages
-
-apt-get purge -y "${EPHEMERAL[@]}"
-apt-get autoremove --purge -y
-
-. .gitlab-ci/container/container_post_build.sh