chore: remove npm-run-all

Author: azu

package.json

@@ -40,7 +40,6 @@
   },
   "devDependencies": {
     "lint-staged": "^11.2.6",
-    "npm-run-all": "^4.1.5",
     "prettier": "^2.3.1",
     "textlint-scripts": "^12.6.1",
     "textlint-tester": "^12.6.1"