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

This reverts commit 68be3a6bcd.

e2e-tests/.ci/dashboard.override.yml

@@ -1,24 +0,0 @@
----
-version: '3.1'
-
-services:
-    dashboard:
-        image: node:16.17.0
-        environment:
-          PG_URI: postgres://mmuser:mostest@db:5432/automation_dashboard_db
-          JWT_SECRET: s8gGBA3ujKRohSw1L8HLOY7Jjnu2ZYv8 # Generated with e.g. `dd if=/dev/urandom count=24 bs=1 2>/dev/null | base64 -w0`
-          JWT_USER: cypress-test
-          JWT_ROLE: integration
-          JWT_ALG: HS256
-          JWT_EXPIRES_IN: 365d
-          ALLOWED_USER: cypress-test
-          ALLOWED_ROLE: integration
-        user: "${MME2E_UID}"
-        volumes:
-          - "../:/app"
-          - "../../dashboard.entrypoint.sh:/usr/local/bin/dashboard.entrypoint.sh:ro"
-          - "../../.env.dashboard:/var/local/.env.dashboard:rw"
-        working_dir: /app
-        entrypoint: /usr/local/bin/dashboard.entrypoint.sh
-        ports:
-            - 4000:4000