Remove turbolinks from filtered search after rebase.

spec/javascripts/filtered_search/filtered_search_manager_spec.js.es6

-/* global Turbolinks */
-
-//= require turbolinks
+//= require lib/utils/url_utility
 //= require lib/utils/common_utils
 //= require filtered_search/filtered_search_token_keys
 //= require filtered_search/filtered_search_tokenizer
@@ -38,7 +36,7 @@
       it('should search with a single word', () => {
         getInput().value = 'searchTerm';
 
-        spyOn(Turbolinks, 'visit').and.callFake((url) => {
+        spyOn(gl.utils, 'visitUrl').and.callFake((url) => {
           expect(url).toEqual(`${defaultParams}&search=searchTerm`);
         });
 
@@ -48,7 +46,7 @@
       it('should search with multiple words', () => {
         getInput().value = 'awesome search terms';
 
-        spyOn(Turbolinks, 'visit').and.callFake((url) => {
+        spyOn(gl.utils, 'visitUrl').and.callFake((url) => {
           expect(url).toEqual(`${defaultParams}&search=awesome+search+terms`);
         });
 
@@ -58,7 +56,7 @@
       it('should search with special characters', () => {
         getInput().value = '~!@#$%^&*()_+{}:<>,.?/';
 
-        spyOn(Turbolinks, 'visit').and.callFake((url) => {
+        spyOn(gl.utils, 'visitUrl').and.callFake((url) => {
           expect(url).toEqual(`${defaultParams}&search=~!%40%23%24%25%5E%26*()_%2B%7B%7D%3A%3C%3E%2C.%3F%2F`);
         });