Remove bad delete restriction

app/menus/CollectionMenu.js

@@ -65,7 +65,6 @@ class CollectionMenu extends Component {
 
   render() {
     const { collection, label, onOpen, onClose } = this.props;
-    const { allowDelete } = collection;
 
     return (
       <span>
@@ -91,9 +90,7 @@ class CollectionMenu extends Component {
               <DropdownMenuItem onClick={this.onEdit}>Edit…</DropdownMenuItem>
             </Flex>
           )}
-          {allowDelete && (
-            <DropdownMenuItem onClick={this.onDelete}>Delete…</DropdownMenuItem>
-          )}
+          <DropdownMenuItem onClick={this.onDelete}>Delete…</DropdownMenuItem>
         </DropdownMenu>
       </span>
     );

app/menus/DocumentMenu.js

@@ -47,7 +47,6 @@ class DocumentMenu extends Component {
 
   render() {
     const { document, label } = this.props;
-    const { allowDelete } = document;
 
     return (
       <DropdownMenu label={label || <MoreIcon />}>
@@ -69,11 +68,7 @@ class DocumentMenu extends Component {
         </DropdownMenuItem>
         <DropdownMenuItem onClick={window.print}>Print</DropdownMenuItem>
         <DropdownMenuItem onClick={this.handleMove}>Move…</DropdownMenuItem>
-        {allowDelete && (
-          <DropdownMenuItem onClick={this.handleDelete}>
-            Delete…
-          </DropdownMenuItem>
-        )}
+        <DropdownMenuItem onClick={this.handleDelete}>Delete…</DropdownMenuItem>
       </DropdownMenu>
     );
   }

app/models/Collection.js

@@ -33,11 +33,6 @@ class Collection extends BaseModel {
       : this.url;
   }
 
-  @computed
-  get allowDelete(): boolean {
-    return true;
-  }
-
   @computed
   get isEmpty(): boolean {
     return this.documents.length === 0;

app/models/Document.js

@@ -89,17 +89,6 @@ class Document extends BaseModel {
     return !this.isEmpty && !this.isSaving;
   }
 
-  @computed
-  get allowDelete(): boolean {
-    const collection = this.collection;
-    return (
-      collection &&
-      collection.type === 'atlas' &&
-      collection.documents &&
-      collection.documents.length > 1
-    );
-  }
-
   @computed
   get parentDocumentId(): ?string {
     return this.pathToDocument.length > 1