Remove duplicate changelog entries.

Author: nat-henderson

CHANGELOG.md

@@ -2,7 +2,6 @@
 ## 3.21.0 (May 11, 2020)
 
 FEATURES:
-* **New Resource:** `google_bigquery_connection` ([#2014](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2014))
 * **New Resource:** `google_compute_per_instance_config` ([#2029](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2029))
 * **New Resource:** `google_logging_billing_account_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
 * **New Resource:** `google_logging_folder_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
@@ -43,10 +42,6 @@ BUG FIXES:
 * **New Resource:** `google_artifact_registry_repository_iam_binding` ([#1981](https://github.com/terraform-providers/terraform-provider-google-beta/pull/1981))
 * **New Resource:** `google_artifact_registry_repository_iam_member` ([#1981](https://github.com/terraform-providers/terraform-provider-google-beta/pull/1981))
 * **New Resource:** `google_bigquery_connection` ([#2014](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2014))
-* **New Resource:** `google_logging_billing_account_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
-* **New Resource:** `google_logging_folder_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
-* **New Resource:** `google_logging_organization_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
-* **New Resource:** `google_logging_project_bucket_config` ([#2008](https://github.com/terraform-providers/terraform-provider-google-beta/pull/2008))
 
 IMPROVEMENTS:
 * appengine: Added `automatic_scaling`, `basic_scaling`, and `manual_scaling` to `google_app_engine_standard_app_version` ([#1984](https://github.com/terraform-providers/terraform-provider-google-beta/pull/1984))