Removed unnecessary imports

src/test/java/org/gitlab4j/api/TestImportExportApi.java

@@ -24,7 +24,6 @@
 package org.gitlab4j.api;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;