Minor lint tweaks and rules cleanup

js/tests/unit/modal.js

@@ -826,7 +826,6 @@ $(function () {
       '</div>'
     ].join('')).appendTo('#qunit-fixture')
 
-
     $modal.on('shown.bs.modal', function () {
       assert.strictEqual($modal.scrollTop(), 0)
       done()

js/tests/unit/toast.js

@@ -208,7 +208,6 @@ $(function () {
       .bootstrapToast('show')
   })
 
-
   QUnit.test('should close toast when close element with data-dismiss attribute is set', function (assert) {
     assert.expect(2)
     var done = assert.async()

js/tests/unit/util.js

@@ -63,7 +63,6 @@ $(function () {
 
     Util.typeCheckConfig(namePlugin, config, defaultType)
 
-    // eslint-disable-next-line
     config.toggle = undefined
 
     Util.typeCheckConfig(namePlugin, config, defaultType)