[Improvement] Toast: support Vue.use to register (#690)

build/bin/build-entry.js

@@ -8,10 +8,7 @@ const tips = '// This file is auto gererated by build/bin/build-entry.js';
 function buildVantEntry() {
   const uninstallComponents = [
     'Lazyload',
-    'Waterfall',
-    'Toast',
-    'ImagePreview',
-    'Locale'
+    'Waterfall'
   ];
 
   const importList = Components.map(name => `import ${uppercamelize(name)} from './${name}';`);