Documentation cleanup

docs/acc-test-environment-variables.md

@@ -51,7 +51,6 @@ Environment variables (beyond standard AWS Go SDK ones) used by acceptance testi
 | `AWS_CODEBUILD_GITHUB_SOURCE_LOCATION` | GitHub source URL for CodeBuild testing. CodeBuild must have access to this repository via OAuth or Source Credentials. Defaults to `https://github.com/hashibot-test/aws-test.git`. |
 | `AWS_DEFAULT_REGION` | Primary AWS region for tests. Defaults to `us-west-2`. |
 | `AWS_DETECTIVE_MEMBER_EMAIL` | Email address for Detective Member testing. A valid email address associated with an AWS root account is required for tests to pass. |
-| `AWS_EC2_CLASSIC_REGION` | AWS region for EC2-Classic testing. Defaults to `us-east-1` in AWS Commercial and `AWS_DEFAULT_REGION` otherwise. |
 | `AWS_EC2_CLIENT_VPN_LIMIT` | Concurrency limit for Client VPN acceptance tests. [Default is 5](https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/limits.html) if not specified. |
 | `AWS_EC2_EIP_PUBLIC_IPV4_POOL` | Identifier for EC2 Public IPv4 Pool for EC2 EIP testing. |
 | `AWS_GUARDDUTY_MEMBER_ACCOUNT_ID` | Identifier of AWS Account for GuardDuty Member testing. **DEPRECATED:** Should be replaced with standard alternate account handling for tests. |