Remove or sync the duplicate stale website copy

[chaudhryumer]

Part 3 — Sync stale website submodule

• website/ submodule was not empty, but pinned to a stale commit (badfe70d)
  on a merged feature branch (feature/add-react-app), in detached HEAD
• Confirmed that commit is a safe ancestor of CalculusSolver-Website's main
  (no work lost)
• Synced submodule to current main and pushed updated reference
• .gitmodules URL was already correct — no change needed there

[vercel]

@chaudhryumer is attempting to deploy a commit to the chuzaairforce-7557's projects Team on Vercel.

A member of the Team first needs to authorize it.