patch 8.2.4200: some tests do not clean up properly

Problem:    Some tests do not clean up properly.
Solution:   Delete created files. (Yegappan Lakshmanan, closes #9611)
diff --git a/src/version.c b/src/version.c
index 621bc59..aa0910e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4200,
+/**/
     4199,
 /**/
     4198,