fix import of junit assert

vxquery-core/src/test/java/org/apache/vxquery/indexing/MetaFileUtilTest.java

diff --git a/vxquery-core/src/test/java/org/apache/vxquery/indexing/MetaFileUtilTest.java b/vxquery-core/src/test/java/org/apache/vxquery/indexing/MetaFileUtilTest.java
index 543719d..60f39f8 100644
--- a/vxquery-core/src/test/java/org/apache/vxquery/indexing/MetaFileUtilTest.java
+++ b/vxquery-core/src/test/java/org/apache/vxquery/indexing/MetaFileUtilTest.java
@@ -26,13 +26,12 @@
 import org.apache.vxquery.runtime.functions.index.updateIndex.MetaFileUtil;
 import org.apache.vxquery.runtime.functions.index.updateIndex.XmlMetadata;
 import org.junit.AfterClass;
+import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.FixMethodOrder;
 import org.junit.Test;
 import org.junit.runners.MethodSorters;
 
-import junit.framework.Assert;
-
 /**
  * Test cases for testing MetaFileUtil functions.
  * 1) Creating MetaData file