patch 8.1.1724: too much overhead checking for CTRL-C while processing text

Problem:    Too much overhead checking for CTRL-C while processing text.
Solution:   Increase BREAKCHECK_SKIP.  Remove the difference for when built
            with the GUI. (suggested by Andy Massimino, closes #4708)

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1724,
 /**/
     1723,
 /**/