Revert "Prepare: run E2E smoketests with GitHub actions (#23301)" (#23553)

This reverts commit 68be3a6bcd.

e2e-tests/.ci/dashboard.start.sh

@@ -1,29 +0,0 @@
-#!/bin/bash
-set -e -u -o pipefail
-cd $(dirname $0)
-. .e2erc
-
-MME2E_DASHBOARD_REF_DEFAULT="origin/main"
-MME2E_DASHBOARD_REF=${MME2E_DASHBOARD_REF:-$MME2E_DASHBOARD_REF_DEFAULT}
-
-mme2e_log "Cloning the automation-dashboard project"
-[ -d dashboard ] || git clone https://github.com/saturninoabril/automation-dashboard.git dashboard
-git -C dashboard fetch
-git -C dashboard checkout $MME2E_DASHBOARD_REF
-
-mme2e_log "Starting the dashboard"
-${MME2E_DC_DASHBOARD} up -d db dashboard
-
-mme2e_log "Generating the dashboard's local URL"
-MME2E_DC_DASHBOARD_NETWORK=$(${MME2E_DC_DASHBOARD} ps -q dashboard | xargs -l docker inspect | jq -r '.[0].NetworkSettings.Networks | (keys|.[0])')
-MME2E_DC_DASHBOARD_GATEWAY=$(docker network inspect $MME2E_DC_DASHBOARD_NETWORK | jq -r '.[0].IPAM.Config[0].Gateway')
-AUTOMATION_DASHBOARD_URL="http://${MME2E_DC_DASHBOARD_GATEWAY}:4000/api"
-
-mme2e_log "Generating a signed JWT token for accessing the dashboard"
-AUTOMATION_DASHBOARD_TOKEN=$(${MME2E_DC_DASHBOARD} exec -T -u $MME2E_UID dashboard node script/sign.js | awk '{ print $2; }') # The token secret is specified in the dashboard.override.yml file
-
-mme2e_log "Generating the .env.dashboard file, to point Cypress to the dashboard URL"
-mme2e_generate_envfile_from_var_names >.env.dashboard <<EOF
-AUTOMATION_DASHBOARD_URL
-AUTOMATION_DASHBOARD_TOKEN
-EOF