fix junit import

Author: cshannon

test/src/main/java/org/apache/accumulo/test/functional/TabletMergeabilityIT.java

@@ -20,8 +20,8 @@
 
 import static org.apache.accumulo.test.TestIngest.generateRow;
 import static org.apache.accumulo.test.compaction.ExternalCompactionTestUtils.countTablets;
-import static org.junit.Assert.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;