fixed linter issue

Author: scmacdon

kotlin/services/autoscale/src/test/kotlin/AutoScalingTest.kt

@@ -1,7 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-import aws.sdk.kotlin.runtime.auth.credentials.EnvironmentCredentialsProvider
 import aws.sdk.kotlin.services.secretsmanager.SecretsManagerClient
 import aws.sdk.kotlin.services.secretsmanager.model.GetSecretValueRequest
 import com.example.autoscaling.createAutoScalingGroup