Remove leftover merge conflict on the FAQ page

[notpushkin]

Here's the page in question: https://coder.com/docs/code-server/v3.11.0/FAQ#whats-the-difference-between-code-server-and-vs-code-codespaces

[code-asher]

Thank you for finding this!

I think we want to keep the Does code-server have any security login validation section but we can remove Enterprise (it will also need to be removed in the table of contents at the top).