[mod] one logger per engine - drop obsolete logger.getChild

Remove the no longer needed `logger = logger.getChild(...)` from engines.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/engines/apkmirror.py

@@ -8,15 +8,12 @@
 from urllib.parse import urlencode
 from lxml import html
 
-from searx import logger
 from searx.utils import (
     eval_xpath_list,
     eval_xpath_getindex,
     extract_text,
 )
 
-logger = logger.getChild('APKMirror engine')
-
 about = {
     "website": 'https://www.apkmirror.com',
     "wikidata_id": None,