Remove LT copyright in All templates

For remove copyright Please refer to the following address :

templates/Your template name /index.php

Pleae remove The following code or similar code 

<?php $wfk=’PGRpdiBzdHlsZT0icG9zaXRpb246YWJzb2x1dGU7dG9wOjA7bGVmdDotOTk5OXB4OyI+CjxhIGhyZWY9Imh0d

HA6Ly9qb29tbGE0ZXZlci5ydS9sdGhlbWUvMzY0NC1sdC1hcnQtc3R1ZGlvLmh0bWwiIHRpdGxlPSJMVCBBcnQgU3R1Z

GlvIC0g0YjQsNCx0LvQvtC9IGpvb21sYSIgdGFyZ2V0PSJfYmxhbmsiPkxUIEFydCBTdHVkaW8gLSDRiNCw0LHQu9C+0

L0gam9vbWxhPC9hPgo8YSBocmVmPSJodHRwOi8vYWxsdmlkZW8uaW5mby8iIHRpdGxlPSLQktC40LTQtdC+IiB0YXJ

nZXQ9Il9ibGFuayI+0JLQuNC00LXQvjwvYT4KPC9kaXY+’; echo base64_decode($wfk); ?>