Remove GitHub Actions workflows from fork

Removed all GitHub Actions workflows (.github/workflows/) as they're not needed
for this Tesla K80 support fork. The workflows were designed for the official
Ollama repository's CI/CD pipeline and would fail in a fork since they:
- Attempt to push to Ollama's Docker Hub
- Run automated tests on PRs (not needed for personal fork)
- Handle official release process

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/latest.yaml

@@ -1,24 +0,0 @@
-name: latest
-
-on:
-  release:
-    types: [released]
-
-jobs:
-  update-latest:
-    environment: release
-    runs-on: linux
-    steps:
-      - uses: actions/checkout@v4
-      - name: Login to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ vars.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
-      - name: Tag images as latest
-        env:
-          PUSH: "1"
-        shell: bash
-        run: |
-          export "VERSION=${GITHUB_REF_NAME#v}"
-          ./scripts/tag_latest.sh