chore: eslint rule 수정

Author: kyubumjang

.eslintrc.json

@@ -6,7 +6,7 @@
     "prettier"
   ],
   "rules": {
-    "@typescript-eslint/no-unused-vars": "error",
+    "@typescript-eslint/no-unused-vars": "warn",
     "@typescript-eslint/no-explicit-any": "error",
     "react/function-component-definition": [
       2,