Remove unused prometheus exporter

The Prometheus exporter is effectively, not only unused, but
unusable, due to missing dependencies. Since currently we
don't have use case for it, opt for dropping the exporter
entirely from the image.

Signed-off-by: Marco Chiappero <marco.chiappero@suse.com>

ironic-image/ironic-config/ironic.conf.j2

@@ -192,11 +192,6 @@ insecure = {{ env.IRONIC_INSECURE }}
 [nova]
 send_power_notifications = false
 
-[oslo_messaging_notifications]
-driver = prometheus_exporter
-location = /shared/ironic_prometheus_exporter
-transport_url = fake://
-
 [pxe]
 # NOTE(dtantsur): keep this value at least 3x lower than
 # [conductor]deploy_callback_timeout so that at least some retries happen.

ironic-image/scripts/configure-ironic.sh

@@ -79,7 +79,6 @@ echo 'Options set from Environment variables'
 env | grep "^OS_" || true
 
 mkdir -p /shared/html
-mkdir -p /shared/ironic_prometheus_exporter
 
 if [[ -f /proc/sys/crypto/fips_enabled ]]; then
     ENABLE_FIPS_IPA=$(cat /proc/sys/crypto/fips_enabled)

ironic-image/scripts/runironic-exporter

@@ -1,14 +0,0 @@
-#!/usr/bin/bash
-
-# shellcheck disable=SC1091
-. /bin/configure-ironic.sh
-# shellcheck disable=SC1091
-. /bin/ironic-common.sh
-
-FLASK_RUN_HOST=${FLASK_RUN_HOST:-0.0.0.0}
-FLASK_RUN_PORT=${FLASK_RUN_PORT:-9608}
-
-export IRONIC_CONFIG="${IRONIC_CONF_DIR}/ironic.conf"
-
-exec gunicorn -b "${FLASK_RUN_HOST}:${FLASK_RUN_PORT}" -w 4 \
-    ironic_prometheus_exporter.app.wsgi:application