Remove unused import

Author: Fang-Pen Lin

src/main/java/com/infisical/sdk/auth/AwsAuthProvider.java

@@ -12,7 +12,6 @@
 import java.util.Base64;
 import java.util.List;
 import java.util.Map;
-import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 import lombok.Builder;
 import lombok.Data;