Fix lint

Author: Acconut

src/test/java/io/getstream/chat/java/ChannelTest.java

@@ -16,7 +16,6 @@
 import java.util.List;
 import java.util.TimeZone;
 import java.util.stream.Collectors;
-
 import org.apache.commons.lang3.RandomStringUtils;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.DisplayName;