patch 8.0.1447: still too many old style tests

Problem:    Still too many old style tests.
Solution:   Turn a few tests into new style. (Yegappan Lakshmanan,
            closes #2509)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index e8b1db3..f27a6b4 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -74,9 +74,9 @@
 .SUFFIXES : .out .in
 
 SCRIPT = test1.out test3.out \
-       test14.out test15.out \
+       test14.out \
        test29.out \
-       test30.out test36.out test37.out test39.out \
+       test30.out test37.out test39.out \
        test42.out test44.out test48.out test49.out \
        test64.out test69.out \
        test72.out test77a.out test88.out \
@@ -108,7 +108,7 @@
 .ENDIF
 
 .IFDEF WANT_WIN
-SCRIPT_WIN = test50.out test52.out
+SCRIPT_WIN = test52.out
 .ENDIF
 
 .IFDEF WANT_SPELL