[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/google.py

@@ -29,12 +29,9 @@ The google WEB engine itself has a special setup option:
 
 from urllib.parse import urlencode
 from lxml import html
-from searx import logger
 from searx.utils import match_language, extract_text, eval_xpath, eval_xpath_list, eval_xpath_getindex
 from searx.exceptions import SearxEngineCaptchaException
 
-logger = logger.getChild('google engine')
-
 # about
 about = {
     "website": 'https://www.google.com',