refactor: remove deprecated configuration files for searxng

- Deleted `limiter.toml` and `settings.yml` as they are no longer needed in the current setup.

docker/searxng/limiter.toml

@@ -1,5 +0,0 @@
-[botdetection.ip_limit]
-link_token = false
-
-[botdetection.ip_lists]
-pass_ip = ["0.0.0.0/0"]

docker/searxng/settings.yml

@@ -1,90 +0,0 @@
-use_default_settings:
-  engines:
-    remove:
-      - ahmia
-      - torch
-      - qwant
-      - qwant news
-      - qwant images
-      - qwant videos
-      - mojeek
-      - mojeek images
-      - mojeek news
-
-server:
-  secret_key: "override-me-via-env"
-  limiter: false
-  image_proxy: false
-  method: "GET"
-  default_http_headers:
-    X-Robots-Tag: "noindex, nofollow"
-
-search:
-  formats:
-    - html
-    - json
-  default_lang: "auto"
-  autocomplete: ""
-  safe_search: 0
-  ban_time_on_fail: 5
-  max_ban_time_on_fail: 120
-  suspended_times:
-    SearxEngineAccessDenied: 3600
-    SearxEngineCaptcha: 3600
-    SearxEngineTooManyRequests: 600
-    cf_SearxEngineCaptcha: 7200
-    cf_SearxEngineAccessDenied: 3600
-    recaptcha_SearxEngineCaptcha: 7200
-
-ui:
-  static_use_hash: true
-
-outgoing:
-  request_timeout: 12.0
-  max_request_timeout: 20.0
-  pool_connections: 100
-  pool_maxsize: 20
-  enable_http2: true
-  extra_proxy_timeout: 10
-  retries: 1
-  # Uncomment and set your residential proxy URL to route search engine requests through it.
-  # Format: http://<username>:<base64_password>@<hostname>:<port>/
-  #
-  # proxies:
-  #   all://:
-  #     - http://user:pass@proxy-host:port/
-
-engines:
-  - name: google
-    disabled: false
-    weight: 1.2
-    retry_on_http_error: [429, 503]
-  - name: duckduckgo
-    disabled: false
-    weight: 1.1
-    retry_on_http_error: [429, 503]
-  - name: brave
-    disabled: false
-    weight: 1.0
-    retry_on_http_error: [429, 503]
-  - name: bing
-    disabled: false
-    weight: 0.9
-    retry_on_http_error: [429, 503]
-  - name: wikipedia
-    disabled: false
-    weight: 0.8
-  - name: stackoverflow
-    disabled: false
-    weight: 0.7
-  - name: yahoo
-    disabled: false
-    weight: 0.7
-    retry_on_http_error: [429, 503]
-  - name: wikidata
-    disabled: false
-    weight: 0.6
-  - name: currency
-    disabled: false
-  - name: ddg definitions
-    disabled: false