patch 8.1.0884: double check for bsd systems

Problem:    Double check for bsd systems.
Solution:   Delete the old line.

src/version.c

@@ -783,6 +783,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    884,
 /**/
     883,
 /**/