[mod] move extract_text, extract_url to searx.utils

searx/engines/duckduckgo_images.py

@@ -15,12 +15,12 @@
 
 from json import loads
 from urllib.parse import urlencode
-from searx.engines.xpath import extract_text
 from searx.engines.duckduckgo import (
     _fetch_supported_languages, supported_languages_url,
     get_region_code, language_aliases
 )
 from searx.poolrequests import get
+from searx.utils import extract_text
 
 # engine dependent config
 categories = ['images']