removed unused import

Author: Anirav Kareddy

src/test/java/software/amazon/encryption/s3/S3EncryptionClientCompatibilityTest.java

@@ -18,7 +18,6 @@
 import com.amazonaws.services.s3.model.KMSEncryptionMaterials;
 import com.amazonaws.services.s3.model.KMSEncryptionMaterialsProvider;
 import com.amazonaws.services.s3.model.StaticEncryptionMaterialsProvider;
-import org.bouncycastle.jcajce.provider.symmetric.AES;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import software.amazon.awssdk.core.ResponseBytes;