docs: 移除 Docker Compose 相关文档

移除了以下内容:
- Docker Compose 安装指南
- Clash、frps、rustdesk 和 vaultwarden 的 Docker Compose 部署文档
- 相关的 docker-compose.yml 文件和 .env 文件

docker/compose/clash/docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  clash:
+    image: registry.cn-hangzhou.aliyuncs.com/37/clash:latest
+    container_name: clash
+    restart: always
+    network_mode: bridge
+    ports:
+      - "7890:7890/tcp"
+      - "7890:7890/udp"
+      - "9090:9090"
+    volumes:
+      - ./data/config.yaml:/root/.config/clash/config.yaml