patch 9.0.0663: tests check for +cmdwin feature which is always present

Problem:    Tests check for +cmdwin feature which is always present.
Solution:   Remove the checks. (closes #11287)

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    663,
 /**/
     662,
 /**/