delete unused files

packages/switch/package.json

@@ -1,10 +0,0 @@
-{
-  "name": "@youzan/van-switch",
-  "version": "0.0.1",
-  "description": "switch component",
-  "main": "./index.js",
-  "author": "jiangruowei",
-  "license": "MIT",
-  "devDependencies": {},
-  "dependencies": {}
-}

packages/switch/src/switch.vue

@@ -8,7 +8,7 @@
 </template>
 
 <script>
-import VanLoading from 'packages/loading';
+import VanLoading from '../../loading';
 /**
  * van-switch
  * @module components/switch