patch 8.2.2110: cannot use ":shell" when reading from stdin

Problem:    Cannot use ":shell" when reading from stdin. (Gary Johnson)
Solution:   Revert patch 8.2.1833.
diff --git a/src/version.c b/src/version.c
index 5b4fa39..6580dbd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2110,
+/**/
     2109,
 /**/
     2108,