CI: Remove deleted worker deploy job from docs workflow

## Problem

PR #223 removed `docs/worker` directory (moved to shared bug-reports-worker), but the `deploy-worker` job in `.github/workflows/docs.yml` was not removed.

This causes the Deploy Documentation workflow to fail:
```
Error: Directory docs/worker does not exist.
```

## Solution

Remove the `deploy-worker` job from `.github/workflows/docs.yml`.