core: 性能优化

packages/hydrooj/package.json

@@ -25,7 +25,6 @@
         "koa-router": "^10.0.0",
         "koa-static-cache": "^5.1.3",
         "lodash": "^4.17.21",
-        "lru-cache": "^6.0.0",
         "minio": "7.0.17",
         "moment-timezone": "^0.5.32",
         "mongodb": "^3.6.5",
@@ -36,7 +35,6 @@
         "sockjs": "^0.3.20",
         "superagent": "^6.1.0",
         "systeminformation": "5.6.8",
-        "wtfnode": "^0.8.4",
         "yargs": "^16.2.0"
     },
     "devDependencies": {
@@ -48,14 +46,12 @@
         "@types/koa-router": "^7.4.1",
         "@types/koa-static-cache": "^5.1.0",
         "@types/lodash": "^4.14.168",
-        "@types/lru-cache": "^5.1.0",
         "@types/minio": "^7.0.7",
         "@types/mongodb": "^3.6.10",
         "@types/nodemailer": "^6.4.1",
         "@types/serialize-javascript": "^5.0.0",
         "@types/sockjs": "^0.3.32",
         "@types/superagent": "^4.1.8",
-        "@types/wtfnode": "^0.7.0",
         "@types/yargs": "^16.0.0",
         "formidable": "^1.2.2"
     },