removing CHANGELOG.md

Author: reetasingh

.github/PULL_REQUEST_TEMPLATE

@@ -9,7 +9,6 @@ multiple changes are involved, a bulleted list is often useful.)
 
 ## Completion checklist
 
-- [ ] CHANGELOG.md has been updated to reflect the changes
 - [ ] Additions and changes have unit tests
 - [ ] [Unit tests, Pylint, security testing, and Integration tests are passing.](https://github.com/salesforce/policy_sentry/actions). GitHub actions does this automatically
 - [ ] The pull request has been appropriately labeled using the provided PR labels