Remove var from bootstrap jquery spec js

changelogs/unreleased/remove_var_from_bootstrap_jquery_spec_js.yml

+---
+title: Remove var from bootstrap_jquery_spec.js
+merge_request: 20089
+author: Lee Tickett
+type: other

spec/javascripts/bootstrap_jquery_spec.js

-/* eslint-disable no-var */
-
 import $ from 'jquery';
 import '~/commons/bootstrap';
 
@@ -10,15 +8,13 @@ describe('Bootstrap jQuery extensions', function() {
     });
 
     it('adds the disabled attribute', function() {
-      var $input;
-      $input = $('input').first();
+      const $input = $('input').first();
       $input.disable();
 
       expect($input).toHaveAttr('disabled', 'disabled');
     });
     return it('adds the disabled class', function() {
-      var $input;
-      $input = $('input').first();
+      const $input = $('input').first();
       $input.disable();
 
       expect($input).toHaveClass('disabled');
@@ -30,15 +26,13 @@ describe('Bootstrap jQuery extensions', function() {
     });
 
     it('removes the disabled attribute', function() {
-      var $input;
-      $input = $('input').first();
+      const $input = $('input').first();
       $input.enable();
 
       expect($input).not.toHaveAttr('disabled');
     });
     return it('removes the disabled class', function() {
-      var $input;
-      $input = $('input').first();
+      const $input = $('input').first();
       $input.enable();
 
       expect($input).not.toHaveClass('disabled');