Fix new lint failures due to rebase

Author: devversion

src/lib/schematics/tree/index.ts

@@ -1,7 +1,15 @@
-import {chain, Rule, noop, Tree, SchematicContext} from '@angular-devkit/schematics';
-import {Schema} from './schema';
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {chain, noop, Rule, Tree} from '@angular-devkit/schematics';
 import {addModuleImportToModule, findModuleFromOptions} from '../utils/ast';
 import {buildComponent} from '../utils/devkit-utils/component';
+import {Schema} from './schema';
 
 /**
  * Scaffolds a new tree component.

src/lib/schematics/tree/schema.ts

@@ -1,3 +1,11 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
 import {Schema as ComponentSchema} from '@schematics/angular/component/schema';
 
 export interface Schema extends ComponentSchema {}