chore: remove X from social links

[susnux]

• resolves: Remove link to X from personal settings #57753

Summary

Nextcloud does not use X anymore.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

[susnux]

/backport to stable33

[provokateurin]

❤️

There is still a link to twitter.com in the README and I also found "View %s on Twitter" as a string in the translations, but not the source code (that's probably because it still exists on some stable branch?).

[provokateurin]

/backport to stable32

[provokateurin]

/backport to stable31

[szaimen]

LGTM but did not test

removed link

[susnux]

/backport to stable33

[backportbot]

The backport to stable33 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable33
git pull origin stable33

# Create the new backport branch
git checkout -b backport/57798/stable33

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 60b6e834

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/57798/stable33

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/57798/stable33."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.