patch 8.2.4220: MS-Windows: some old compiler support remains

Problem:    MS-Windows: some old compiler support remains.
Solution:   Remove obsolete compiler support. (Ken Takata, closes #9627)
diff --git a/src/version.c b/src/version.c
index a3efb04..86dcf4e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4220,
+/**/
     4219,
 /**/
     4218,