Remove old obsolete strings from Fluent files

[reemhamz]

One-line summary

Removing old (3+ months) obsolete Fluent strings from Fluent files and any mention of them from HTML files (usually placed in fallback helpers)

✍🏼 Things to note: ✍🏼

• I left the obsolete strings related to the Mozilla accounts update + Monitor updates, since the new strings are still fresh, and we're still using the older strings as fallbacks. We can remove the obsolete strings start of Q1 2024
• I updated WNP 114-119 to include the new title string that was created in a Fluent file but not used. I confirmed with Craig to update the files.

Issue / Bugzilla link

#13714

Testing

The following are pages whose HTML files were edited to remove old strings in fallback/ftl_has_messages helpers
Did I miss anything?

• http://localhost:8000/en-US/firefox/99.0a1/whatsnew/
• http://localhost:8000/en-US/products/vpn/desktop/windows/
• http://localhost:8000/en-US/products/vpn/desktop/
• http://localhost:8000/en-US/products/vpn/desktop/linux/
• http://localhost:8000/en-US/products/vpn/mobile/
• http://localhost:8000/en-US/products/vpn/mobile/ios
• http://localhost:8000/en-US/products/vpn/download/
• http://localhost:8000/en-US/firefox/accounts/
• http://localhost:8000/en-US/firefox/set-as-default/
• http://localhost:8000/en-US/firefox/browsers/compare/
• http://localhost:8000/en-US/firefox/browsers/compare/brave/
• http://localhost:8000/en-US/firefox/browsers/compare/chrome/
• http://localhost:8000/en-US/firefox/browsers/compare/safari/
• http://localhost:8000/en-US/firefox/browsers/compare/edge/
• http://localhost:8000/en-US/firefox/browsers/compare/opera/
• http://localhost:8000/en-US/firefox/browsers/compare/ie/
• http://localhost:8000/en-US/firefox/browsers/mobile/
• http://localhost:8000/en-US/firefox/browsers/mobile/android
• http://localhost:8000/en-US/firefox/browsers/mobile/ios
• http://localhost:8000/en-US/firefox/browsers/mobile/compare/
• http://localhost:8000/en-US/firefox/browsers/mobile/focus/
• http://localhost:8000/en-US/firefox/developer/
• http://localhost:8000/en-US/firefox/facebookcontainer/
• http://localhost:8000/en-US/firefox/features/adblocker/
• http://localhost:8000/en-US/firefox/features/customize/
• http://localhost:8000/en-US/firefox/features/sync/
• http://localhost:8000/en-US/firefox/new/
• http://localhost:8000/en-US/firefox/99.0a1/whatsnew/
• http://localhost:8000/en-US/mission/
• http://localhost:8000/en-US/privacy/faq/

WNP page title string updates:

• http://localhost:8000/en-GB/firefox/114.0/whatsnew/
• http://localhost:8000/de/firefox/114.0/whatsnew/
• http://localhost:8000/en-US/firefox/114.0/whatsnew/
• http://localhost:8000/fr/firefox/114.0/whatsnew/
• http://localhost:8000/de/firefox/115.0/whatsnew/
• http://localhost:8000/fr/firefox/115.0/whatsnew/
• http://localhost:8000/en-GB/firefox/115.0/whatsnew/
• http://localhost:8000/en-US/firefox/115.0/whatsnew/?geo=gb
• http://localhost:8000/en-GB/firefox/116.0/whatsnew/
• http://localhost:8000/de/firefox/116.0/whatsnew/
• http://localhost:8000/fr/firefox/116.0/whatsnew/
• http://localhost:8000/en-US/firefox/117.0/whatsnew/
• http://localhost:8000/en-GB/firefox/117.0/whatsnew/
• http://localhost:8000/fr/firefox/117.0/whatsnew/
• http://localhost:8000/de/firefox/117.0/whatsnew/
• http://localhost:8000/en-US/firefox/118.0/whatsnew/
• http://localhost:8000/en-GB/firefox/118.0/whatsnew/
• http://localhost:8000/fr/firefox/118.0/whatsnew/
• http://localhost:8000/de/firefox/118.0/whatsnew/
• http://localhost:8000/en-US/firefox/119.0/whatsnew/
• http://localhost:8000/en-GB/firefox/119.0/whatsnew/
• http://localhost:8000/fr/firefox/119.0/whatsnew/
• http://localhost:8000/de/firefox/119.0/whatsnew/

[stephaniehobson]

Looks great. Very through 💯 Just needs a rebase to fix the conflicts.

[stephaniehobson]

Nice catch. 🔒

[stephaniehobson]

Nit: The space is on the wrong side of the comma (for all the WNP titles)

If fixing this fills you with dread we can totally leave it.

[reemhamz]

If fixing this fills you with dread we can totally leave it.

Well when you put it like that... 😝 j/k, I'll fix it

[reemhamz]

^ Seems like I also committed a file that was updated in this PR: #13900 by the rebase I just did 🤦🏻‍♀️, but it seems very minimal and harmless (since it's a small string update) so I'll just proceed and merge this PR

[stephaniehobson]

R+