patch 8.2.0010: test64 is old style

Problem:    Test64 is old style.
Solution:   Convert to new style test. (Yegappan Lakshmanan, closes #5363)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index 0959c45..d6d8839 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -75,7 +75,7 @@
 
 SCRIPT = test1.out \
        test42.out test44.out test49.out \
-       test64.out test69.out \
+       test69.out \
        test77a.out \
        test95.out test99.out \
        test_eval.out