How to remove extremetracking tracker from my blog

i inserted extremetracking tracker on my blog via dbd footprint plugin of wordpress.
now i want to remove this tracker.
for this purpose i removed the code from “dbd footprint plugin” it did not work.
then i deactivated plugin but no effect.
finally i deleted this plugin but still extremetracking tracker is present on my blog.
i also searched the code in different files present in Themes–>Editor but not found the code.
anybody please tell me how to remove this tracker.

my blog url is Information & Technology News, Tips and How to Articles