VMS build: don't forget the generation marker when removing files

Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7703)

(cherry picked from commit f19d20b60fcdfde802f96afa3796f20d0da25eab)

Configurations/descrip.mms.tmpl

@@ -798,7 +798,7 @@ $target : $args{generator}->[0] $deps
         \$(PERL) -ne "/^#(\\s*line)?\\s*[0-9]+\\s+""/ or print" > \$\@-i
         \@ $incs_off
         RENAME \$\@-i \$\@
-        DELETE \$\@-S
+        DELETE \$\@-S;
 EOF
               }
               # Otherwise....