patch 8.2.5018: Vim9: some code is not covered by tests

Problem:    Vim9: some code is not covered by tests.
Solution:   Delete dead code.

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5018,
 /**/
     5017,
 /**/