Remove outdated comment. Remove unused variable.
@@ -89,8 +89,6 @@ MatchedElementsFilterDFW::insertField(uint32_t docid, const IDocsumStoreDocument
ResType type, vespalib::slime::Inserter& target)
{
assert(type == ResType::RES_JSONSTRING);
- Slime input_field;
- // Use the document instance if the input field is not in the docsum blob.
auto field_value = doc->get_field_value(_input_field_name);
if (field_value) {
filter_matching_elements_in_input_field_while_converting_to_slime(*field_value, get_matching_elements(docid, *state), target);
