Fixed: Indexer not removed in UI when deleted

Indexer doesn't get removed because createAjaxReqest expects JSON type return, however after net6 provider delete event returns text/html type.

frontend/src/Store/Actions/Creators/createRemoveItemHandler.js

@@ -14,6 +14,7 @@ function createRemoveItemHandler(section, url) {
 
     const ajaxOptions = {
       url: `${url}/${id}?${$.param(queryParams, true)}`,
+      dataType: 'text',
       method: 'DELETE'
     };