website page loading issue, required help?

[Venu]

I am trying to improve my webpage loading speed for wordpress site, it shows 2 javascript files causes of webpage loading speed (resource from Google). such as http://www.seodeveloper.in/wp-includes/j...ver=1.10.2
http://www.seodeveloper.in/wp-includes/j...ver=1.2.1, i had deleted from the cpanel, but still showing these files are main cause, why? How to remove such files permanently?

[Jake]

one tiny hint
http://stackoverflow.com/questions/18421...-i-stop-it

http://www.wpbeginner.com/wp-themes/repl...e-library/

http://css-tricks.com/snippets/wordpress...ess-theme/