build: remove the config for husky

husky has been removed by 980efe8 at 2019 Nov.

package.json

@@ -44,11 +44,5 @@
     "prettier": "^1.19.1",
     "ts-jest": "^26.5.3",
     "typescript": "^4.2.3"
-  },
-  "husky": {
-    "skipCI": true,
-    "hooks": {
-      "pre-commit": "npm run build && npm run format"
-    }
   }
 }