replace apparently pointless function in 2 files
replace apparently pointless function in 2 files

Code loops through all return values of get_possible_traffic_source_addresses(true) to create a list of key=>descript list, but the original function returned exactly such a list anyhow with no other data associated with the keys. So the code seems pointless as it replicates exactly the original return value from possible_traffic_source_addresses(). 

A quick search shows the rewritten code in this PR is already used in diag_testport.php line 287 and status_logs_settings.php line 356 (repo search: https://github.com/pfsense/pfsense/search?utf8=%E2%9C%93&q=get_possible_traffic_source_addresses )
phil-davis/pfsense,NOYB/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,NOYB/pfsense,NewEraCracker/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,pfsense/pfsense,ch1c4um/pfsense,NOYB/pfsense,NewEraCracker/pfsense,BlackstarGroup/pfsense,ptorsten/pfsense,phil-davis/pfsense,ch1c4um/pfsense,pfsense/pfsense,pfsense/pfsense,jxmx/pfsense,brunostein/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,ptorsten/pfsense,dennypage/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,ch1c4um/pfsense,dennypage/pfsense,jxmx/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,brunostein/pfsense