- implemented functionality of adding to preferred and removing from preferred calls;

src/service/preferred-bando-service.js

@@ -7,4 +7,8 @@ export default class PreferredBandoService {
     static addToPreferred = (body, callback, errCallback) => {
         NetworkService.post(`${API_BASE_URL}/beneficiaryPreferredCall`, body, callback, errCallback);
     };
+
+    static deleteFromPreferred = (id, callback, errCallback) => {
+        NetworkService.delete(`${API_BASE_URL}/beneficiaryPreferredCall/${id}`, {}, callback, errCallback);
+    };
 }