jquery (Render Blocking Javascript)

Hi there, i am using frontier theme,greeat repo for develpor,i am just having a small issue,when i test my site speed with google page inshights or gtmetrix,it asks me to remove render blocking javascript or css and shows two lines these are;
http://infowale.com/…-includes/js/jquery/jquery.js?ver=1.11.2
http://infowale.com/…s/jquery/jquery-migrate.min.js?ver=1.2.1

Can u please help me solving this issue,are these JS are necessary in wp???