patch 8.2.2103: Vim9: unreachable code

Problem:    Vim9: unreachable code.
Solution:   Remove the code to prepend s: to the variable name
diff --git a/src/version.c b/src/version.c
index f023d97..2444f0b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2103,
+/**/
     2102,
 /**/
     2101,