fix: remove unnecessary arm compose file

apps/duckdns/docker-compose.arm64.yml

@@ -1,20 +0,0 @@
-version: "3.9"
-services:
-  duckdns:
-    container_name: duckdns # Should be exact same name as "id" field in config.json
-    image: lscr.io/linuxserver/duckdns:arm64v8-b14c520a-ls8 # Try to avoid "latest" tag. As it may break configs in the future.
-    environment:
-      - PUID=1000
-      - PGID=1000
-      - TZ=${TZ}
-      - SUBDOMAINS=${DUCKDNS_SUBDOMAINS}
-      - TOKEN=${DUCKDNS_TOKEN}
-      - UPDATE_IP=${DUCKDNS_UPDATE_IP}
-      - LOG_FILE=${DUCKDNS_ENABLE_LOG_FILE}
-    volumes:
-      - ${APP_DATA_DIR}:/config
-    ports:
-      - ${APP_PORT}:80
-    restart: unless-stopped
-    networks:
-      - tipi_main_network