Removed unused dependencies

Author: andrey-helldar

.babelrc

@@ -48,15 +48,10 @@
         "vite": "^4.1.3"
     },
     "devDependencies": {
-        "@babel/plugin-proposal-class-properties": "^7.18.6",
-        "@babel/plugin-proposal-optional-chaining": "^7.21.0",
-        "@types/markdown-it": "^12.2.3",
         "@types/node": "^18.14.1",
         "@vuepress/core": "^2.0.0-beta.60",
-        "@vuepress/markdown": "^2.0.0-beta.60",
         "@vuepress/utils": "^2.0.0-beta.60",
         "bumpp": "^9.0.0",
-        "markdown-it": "^13.0.1",
         "rimraf": "^4.1.2",
         "tsconfig-vuepress": "^4.0.4",
         "typescript": "^4.9.5",