don't assert forceMerge works since this test uses NoMergePolicy

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1378493 13f79535-47bb-0310-9956-ffa450edef68

lucene/grouping/src/test/org/apache/lucene/search/grouping/GroupFacetCollectorTest.java

@@ -231,6 +231,9 @@ public class GroupFacetCollectorTest extends AbstractGroupingTestCase {
             new MockAnalyzer(random())).setMergePolicy(NoMergePolicy.COMPOUND_FILES));
     boolean useDv = false;
 
+    // Cannot assert this since we use NoMergePolicy:
+    w.setDoRandomForceMergeAssert(false);
+
     // 0
     Document doc = new Document();
     addField(doc, "x", "x", useDv);