Revert "Encourage changelogs to be written as part of docs PR template (cloudflare#24257)"

This reverts commit 2968f18.

Author: marjorieazoulay04-cyber

.github/pull_request_template.md

@@ -10,7 +10,6 @@
 
 <!-- Remove items that do not apply -->
 
-- [ ] Is there a [changelog](https://developers.cloudflare.com/changelog/) entry ([guidelines](https://developers.cloudflare.com/style-guide/documentation-content-strategy/content-types/changelog/))? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to [RSS feeds](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/), the [Discord](https://discord.com/channels/595317990191398933/1040420029080018945), and [X](https://x.com/CFchangelog).
 - [ ] The [documentation style guide](https://developers.cloudflare.com/style-guide/) has been adhered to.
 - [ ] If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
 - [ ] Files which have changed name or location have been allocated [redirects](https://developers.cloudflare.com/pages/configuration/redirects/#per-file).