update PR template (#8951)

Author: scottbuscemi

.github/PULL_REQUEST_TEMPLATE.md

@@ -53,6 +53,4 @@ The following changes still need to be completed:
 **Do not remove** - To be completed by the docs team upon merge:
 
 - [ ] Redirect `/old-path/` => `/new-path/` (if applicable)
-- [ ] Include/exclude pages ^ respectively within docs search service provider (if applicable)
-- [ ] For Heroes - add a props post to the [discussion board](https://discuss.pantheon.io/c/pantheon-platform/documentation/17).
-- [ ] Remove from the [project board](https://github.com/pantheon-systems/documentation/projects/14)
+- [ ] Include/exclude pages ^ respectively within docs search service provider (if applicable)