patch 8.0.0201: completion of highlight groups includes cleared names

Problem:    When completing a group name for a highlight or syntax command
            cleared groups are included.
Solution:   Skip groups that have been cleared.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    201,
 /**/
     200,
 /**/