test: 불필요한 import문 제거

Author: move-hoon

src/test/java/org/sopt/makers/service/SentryEventExtractorServiceTest.java

@@ -3,7 +3,6 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.sopt.makers.dto.SentryEventDetail;
 import org.sopt.makers.global.config.ObjectMapperConfig;