[chore] CI. Disabling artifacts upload to mattermost dockerhub

We are disabling uploading e2e artifacts to mattermost dockerhub repository.
This was temporary, to help with the migration to the new repo, of all sourounding services.

Ticket: https://mattermost.atlassian.net/browse/CLD-5614

.github/workflows/artifacts.yml

@@ -65,44 +65,6 @@ jobs:
           export MM_PACKAGE=https://pr-builds.mattermost.com/$REPO_NAME/commit/$COMMIT_SHA/mattermost-team-linux-amd64.tar.gz
           docker buildx build --push --build-arg MM_PACKAGE=$MM_PACKAGE -t mattermostdevelopment/mm-te-test:${TAG} .
 
-  # Temporary uploading also to mattermost/mm-te-test:${TAG} except mattermostdevelopment/mm-te-test:${TAG}
-  # Context: https://community.mattermost.com/private-core/pl/3jzzxzfiji8hx833ewyuthzkjh
-  build-docker-temp:
-    name: cd/Build and push docker image
-    needs: upload-s3
-    env:
-      REPO_NAME: ${{ github.event.repository.name }}
-
-    runs-on: ubuntu-22.04
-    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
-    steps:
-      - name: cd/Login to Docker Hub
-        uses: docker/login-action@3da7dc6e2b31f99ef2cb9fb4c50fb0971e0d0139 # v2.1.0
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: cd/Download artifacts
-        uses: dawidd6/action-download-artifact@0c49384d39ceb023b8040f480a25596fd6cf441b # v2.26.0
-        with:
-          workflow: ${{ github.event.workflow_run.workflow_id }}
-          run_id: ${{ github.event.workflow_run.id }}
-          workflow_conclusion: success
-          name: server-build-artifact
-          path: server/build/
-      - name: cd/Setup Docker Buildx
-        uses: docker/setup-buildx-action@11e8a2e2910826a92412015c515187a2d6750279 # v2.4
-      - name: cd/Docker build and push
-        env:
-          DOCKER_CLI_EXPERIMENTAL: enabled
-          REPO_NAME: ${{ github.event.repository.name }}
-          COMMIT_SHA: ${{ github.event.workflow_run.head_sha }}
-        run: |
-          export TAG=$(echo "${{ github.event.pull_request.head.sha || github.event.workflow_run.head_sha }}" | cut -c1-7)
-          cd server/build
-          export DOCKER_CLI_EXPERIMENTAL=enabled
-          export MM_PACKAGE=https://pr-builds.mattermost.com/$REPO_NAME/commit/$COMMIT_SHA/mattermost-team-linux-amd64.tar.gz
-          docker buildx build --push --build-arg MM_PACKAGE=$MM_PACKAGE -t mattermost/mm-te-test:${TAG} .
-
   sentry:
     name: Send build info to sentry
     if: >