chore: remove unused deps

Author: ccharly

packages/account-api/package.json

@@ -58,7 +58,6 @@
   "dependencies": {
     "@metamask/keyring-api": "workspace:^",
     "@metamask/keyring-utils": "workspace:^",
-    "@metamask/superstruct": "^3.1.0",
     "uuid": "^9.0.1"
   },
   "devDependencies": {