<! - Outside of the include in order to lock Attribution widget ->As always log into blogger <== Design <== expand widget templates and look for the code above and remove it immediately. After that message appears as shown in the picture below, then click delete widgets,
<b:section class='foot' id='footer-3' showaddelement='no'>
<b:widget id='Attribution1' locked='true' title='' type='Attribution'/>
</ b: section>
Regards,