patch 8.1.1285: test17 is old style

Problem:    Test17 is old style.
Solution:   Turn into new style test. (Yegappan Lakshmanan, closes #4347)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index 8a92b4a..d72b9da 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -83,7 +83,6 @@
        test_eval.out
 
 # Known problems:
-# test17: ?
 #
 # test30: bug, most probably - a problem around mac format
 #
@@ -102,7 +101,7 @@
 .ENDIF
 
 .IFDEF WANT_UNIX
-SCRIPT_UNIX = test10.out test17.out test27.out test49.out
+SCRIPT_UNIX = test10.out test27.out test49.out
 .ENDIF
 
 .IFDEF WANT_WIN