[elasticsearch] Remove unused `nodes_url` var
[elasticsearch] Remove unused `nodes_url` var

jyogi/purvar-agent,cberry777/dd-agent,manolama/dd-agent,Wattpad/dd-agent,jyogi/purvar-agent,cberry777/dd-agent,jyogi/purvar-agent,manolama/dd-agent,manolama/dd-agent,manolama/dd-agent,cberry777/dd-agent,takus/dd-agent,cberry777/dd-agent,jyogi/purvar-agent,cberry777/dd-agent,Wattpad/dd-agent,takus/dd-agent,takus/dd-agent,Wattpad/dd-agent,manolama/dd-agent,takus/dd-agent,takus/dd-agent,Wattpad/dd-agent,Wattpad/dd-agent,jyogi/purvar-agent