chore: remove @types/eslint

Author: antfu

package.json

@@ -87,7 +87,6 @@
     "@antfu/ni": "^0.23.0",
     "@antfu/utils": "^0.7.10",
     "@eslint/config-inspector": "^0.5.4",
-    "@types/eslint": "^9.6.1",
     "@types/lodash.merge": "^4.6.9",
     "@types/node": "^22.5.4",
     "@types/semver": "^7.5.8",