Remove outdated information and point to governance documentation

Signed-off-by: Manuel Rego Casasnovas <[email protected]>

_data/menu.json

@@ -17,7 +17,7 @@
     "url": "#",
     "subpages": [
       { "title": "About Servo", "url": "/about/" },
-      { "title": "Governance", "url": "/governance/" },
+      { "title": "Governance", "url": "https://github.com/servo/project/blob/main/governance/README.md" },
       { "title": "Sponsorship", "url": "/sponsorship/" },
       { "title": "Acknowledgements", "url": "/acknowledgements/" }
     ]

contributing.md

@@ -18,13 +18,3 @@ You can search for and/or report any issues you run into on the [GitHub issue tr
 * Tag us on [Mastodon](https://floss.social/@servo), [Bluesky](https://bsky.app/profile/servo.org) and [Twitter](https://twitter.com/ServoDev)
 * Contact us via email at <[email protected]>
 
-## Collaborators
-
-After demonstrated competence at both writing and reviewing code for a component of Servo, we will consider granting merge and (formal) review privileges to new members. If you're interested, please ask a member of the TSC, and they will verify with an appropriate super-reviewer before granting these privileges.
-
-This verification will involve the super-reviewer ensuring the proposed reviewer's feedback is consistent with the expectations of the project.
-
-While review privileges are traditionally project-wide, it is also possible to have specific review privileges for certain repositories. This is controlled using `extra_reviewers` in the Homu config, as opposed to the main reviewers list.
-
-The current reviewers' GitHub usernames are available at: <https://github.com/servo/saltfs/blob/master/homu/files/cfg.toml>. This drives our installation of <https://github.com/barosl/homu>, our autolander, which is the only approved way to commit changes to the Servo repositories.
-