fix: clean up some redundant/unused code

Author: davewasmer

lib/package-tree.ts

@@ -1,6 +1,3 @@
-import {
-  cloneDeep
-} from 'lodash';
 import * as path from 'path';
 import * as fs from 'fs';
 import * as Plugin from 'broccoli-plugin';

lib/project.ts

@@ -121,7 +121,6 @@ export default class Project {
     this.lint = options.lint;
     this.audit = options.audit;
     this.buildDummy = options.buildDummy;
-    this.pkg = require(path.join(this.dir, 'package.json'));
   }
 
   /**