feat: remove the fallback property (#46)

Author: LiuXing-R

transformations/__testfixtures__/vue-router-v4/create-router.input.js

@@ -20,7 +20,8 @@ const router = new VueRouter({
 });
 
 new VueRouter({
-  routes
+  routes,
+  fallback: false
 });
 
 export default router;

transformations/vue-router-v4.ts

@@ -64,6 +64,8 @@ export const transformAST: ASTTransformation = context => {
         } else if ((p.key as any).name === 'base') {
           baseValue = p.value
           return false
+        } else if ((p.key as any).name === 'fallback') {
+          return false
         }
 
         return true