Remove useless attachToDocument property

attachToDocument property is not needed

ee/spec/frontend/monitoring/panel_type_spec.js

@@ -26,7 +26,6 @@ describe('Panel Type', () => {
       propsData,
       store,
       localVue,
-      attachToDocument: true,
     });
   };
 

ee/spec/frontend/notes/components/note_actions_spec.js

@@ -13,7 +13,6 @@ describe('noteActions', () => {
     shallowMount(noteActions, {
       store,
       propsData,
-      attachToDocument: true,
     });
 
   beforeEach(() => {

ee/spec/frontend/operations/components/dashboard/project_header_spec.js

@@ -12,7 +12,6 @@ describe('project header component', () => {
       propsData: {
         project: mockOneProject,
       },
-      attachToDocument: true,
     });
   };
 

ee/spec/frontend/packages/details/components/app_spec.js

@@ -32,7 +32,6 @@ describe('PackagesApp', () => {
 
     wrapper = mount(PackagesApp, {
       propsData,
-      attachToDocument: true,
     });
   }
 

ee/spec/frontend/related_items_tree/components/related_items_tree_header_spec.js

@@ -30,7 +30,6 @@ const createComponent = ({ slots } = {}) => {
   store.dispatch('setChildrenCount', mockParentItem.descendantCounts);
 
   return shallowMount(RelatedItemsTreeHeader, {
-    attachToDocument: true,
     store,
     slots,
   });

ee/spec/frontend/related_items_tree/components/tree_item_body_spec.js

@@ -45,7 +45,6 @@ const createComponent = (parentItem = mockParentItem, item = mockItem) => {
   });
 
   return shallowMount(TreeItemBody, {
-    attachToDocument: true,
     store,
     propsData: {
       parentItem,

ee/spec/frontend/vue_mr_widget/components/approvals/approvals_summary_optional_spec.js

@@ -14,7 +14,6 @@ describe('EE MRWidget approvals summary optional', () => {
   const createComponent = (props = {}) => {
     wrapper = shallowMount(ApprovalsSummaryOptional, {
       propsData: props,
-      attachToDocument: true,
     });
   };