enhancement: put the no-unused-vars check back in

Author: dafuga

.eslintrc

@@ -23,7 +23,6 @@
         "@typescript-eslint/no-explicit-any": "off",
         "@typescript-eslint/no-namespace": "off",
         "@typescript-eslint/no-non-null-assertion": "off",
-        "@typescript-eslint/no-unused-vars": "off",
         "@typescript-eslint/no-empty-function": "warn",
         "no-inner-declarations": "off"
     },