patch 8.1.0440: remove() with a range not sufficiently tested

Problem:    remove() with a range not sufficiently tested.
Solution:   Add a test. (Dominique Pelle, closes #3497)
diff --git a/src/version.c b/src/version.c
index 1f14030..e6f7e1e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    440,
+/**/
     439,
 /**/
     438,