neatogen: [nfc] remove unused 'read_top' macro

This macro also appears to be incorrect; it does not use its parameter `h` but
instead uses `s`.

diff --git a/lib/neatogen/closest.c b/lib/neatogen/closest.c
index f104dca440d7d28675951dc4292679af35782fb8..3ca9a01a0236e489d487b0673290f30452f3d777 100644 (file)
--- a/lib/neatogen/closest.c
+++ b/lib/neatogen/closest.c
@@ -59,8 +59,6 @@ static void freeStack(PairStack * s)
 
 #define pop(s,x) ((s->top==0) ? FALSE : (s->top--, x = s->data[s->top], TRUE))
 
-#define read_top(h,x) ((s->top==0) ? FALSE : (x = s->data[s->top-1], TRUE))
-
 #define sub(h,i) (h->data[i])
 
 /* An auxulliary data structure (a heap) for