[Unmute] NumberFieldTypeTests (#2531)

After merging Lucene 9.1 NumberFieldTypeTests is now passing. Unmute test.

Signed-off-by: Nicholas Walter Knize <nknize@apache.org>

server/src/test/java/org/opensearch/index/mapper/NumberFieldTypeTests.java

@@ -531,7 +531,6 @@ public class NumberFieldTypeTests extends FieldTypeTestCase {
         dir.close();
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/opensearch-project/OpenSearch/issues/2063")
     public void testIndexSortIntRange() throws Exception {
         doTestIndexSortRangeQueries(NumberType.INTEGER, random()::nextInt);
     }