update release notes for v4.5.0

Author: Jeremy Udit

CHANGELOG.md

@@ -4,14 +4,11 @@ ENHANCEMENTS:
 
 - Add ability for `github_team_repository` to accept slug as a valid `team_id` ([#693](https://github.com/integrations/terraform-provider-github/pull/693))
 
-## 4.4.1 (February 17, 2021)
-
 BUG FIXES:
 
 - Add more context to error messaging for `github_branch_protection` ([#691](https://github.com/integrations/terraform-provider-github/pull/691))
 - Satisfy linter recommendation for `github_branch_protection` ([#694](https://github.com/integrations/terraform-provider-github/pull/694))
 
-
 ## 4.4.0 (February 5, 2021)
 
 BUG FIXES: