patch 8.0.0658: spell test is old style

Problem:    Spell test is old style.
Solution:   Turn the spell test into a new style test (pschuh, closes #1778)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index b0c26aa..3392f07 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -123,7 +123,7 @@
 # (this should be changed in order to preserve the original filename) - should
 # be fixed. VMS allows just one dot in the filename
 #
-# test58, test59: Failed/Hangs - VMS does not support spell files (file names
+# test59: Failed/Hangs - VMS does not support spell files (file names
 # with too many dots).
 #
 # test72: bug - Vim hangs at :rename (while rename works well otherwise)
@@ -148,7 +148,7 @@
 .ENDIF
 
 .IFDEF WANT_SPELL
-SCRIPT_SPELL = test58.out test59.out 
+SCRIPT_SPELL = test59.out 
 .ENDIF
 
 .IFDEF WANT_MZSCH