Fixed spotless issue

Author: inv-jishnu

data-loader/core/src/test/java/com/scalar/db/dataloader/core/dataimport/log/SingleFileImportLoggerTest.java

@@ -2,7 +2,6 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertNotEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;