[refactor] engines: migrate to SXNG_Response.html() (#6718)

searx/engines/nyaa.py

@@ -3,7 +3,6 @@
 
 from urllib.parse import urlencode
 
-from lxml import html
 from searx.utils import (
     eval_xpath_getindex,
     extract_text,
@@ -55,7 +54,7 @@ def request(query, params):
 def response(resp):
     results = []
 
-    dom = html.fromstring(resp.text)
+    dom = resp.html()
 
     for result in dom.xpath(xpath_results):
         # defaults