google does not make any styles than you can hide etc. perhaps jquery can be used?
var table =
new google.visualization.Table(document.getElementById('table_div'));
table.setColumns([2]); <-- this does not work
table.draw(response.getDataTable(), {showRowNumber: false});
the google api documents shows no method for setColumns on a datatable object. though you can use
http://code.google.com/apis/visualization/documentation/reference.html#DataTable_removeColumns