chore: vite config del plugin

package.json

@@ -57,7 +57,6 @@
     "@commitlint/cli": "^10.0.0",
     "@commitlint/config-conventional": "^10.0.0",
     "@types/node": "^14.14.31",
-    "@vitejs/plugin-legacy": "^1.3.1",
     "@vitejs/plugin-vue": "^1.1.4",
     "@vue/compiler-sfc": "^3.0.5",
     "@vue/eslint-config-prettier": "^6.0.0",

vite.config.ts

@@ -2,7 +2,6 @@ import { defineConfig } from 'vite';
 import vue from '@vitejs/plugin-vue';
 import Markdown from 'vite-plugin-md';
 import path from 'path';
-import legacy from '@vitejs/plugin-legacy';
 const resolve = path.resolve;
 // https://vitejs.dev/config/
 export default defineConfig({
@@ -31,10 +30,7 @@ export default defineConfig({
     vue({
       include: [/\.vue$/, /\.md$/]
     }),
-    Markdown(),
-    legacy({
-      targets: ['defaults', 'not IE 11']
-    })
+    Markdown()
   ],
   build: {
     cssCodeSplit: false,