chore: remove plugin checklist from PR template (#7105)

Author: simon-id

.github/pull_request_template.md

@@ -1,25 +1,11 @@
+<ins>**Please make sure your changes are properly tested**!</ins>
+
 ### What does this PR do?
 <!-- A brief description of the change being made with this pull request. -->
 
 ### Motivation
 <!-- What inspired you to submit this pull request? -->
 
-### Plugin Checklist
-<!-- Fill this section if adding or updating a plugin. Remove otherwise. -->
-
-- [ ] Unit tests.
-- [ ] Integration tests.
-- [ ] Benchmarks.
-- [ ] TypeScript [definitions][1].
-- [ ] TypeScript [tests][2].
-- [ ] API [documentation][3].
-- [ ] CI [jobs/workflows][4].
-
-[1]: https://github.com/DataDog/dd-trace-js/blob/master/index.d.ts
-[2]: https://github.com/DataDog/dd-trace-js/blob/master/docs/test.ts
-[3]: https://github.com/DataDog/documentation/blob/master/content/en/tracing/trace_collection/library_config/nodejs.md
-[4]: https://github.com/DataDog/dd-trace-js/blob/master/.github/workflows/plugins.yml
-
 ### Additional Notes
 <!-- Anything else we should know when reviewing? -->