Jquery Remove plugin from selected Element

Question

ok i have a table with data in it with a plugin that sorts the table with the text that is in it by clicking on the table header;

i do this with this code

$('.sort-table').tablesorter();

but if the table is reloaded with AJax i Get Duplicated data then when it is sorted is there a way to remove this to then restart it sort of thing .

$('.sort-table').tablesorter();