fhem.pl: remove error message on -ignoreErr for YahooWeather / fhem.cfg.demo
fhem.pl: remove error message on -ignoreErr for YahooWeather / fhem.cfg.demoView Changes
Source: fhem.pl: remove error message on -ignoreErr for YahooWeather / fhem.cfg.demo (https://sourceforge.net/p/fhem/code/12564/)