graphics/birdfont: Remove unneeded patch

- In conversation with upstream author, the following patch could be
   safely removed, since compiler catch as an error if stdlib.h is
   missing.
   ---
   #ifdef MAC
   #include <malloc/malloc.h>
  +#elif __FreeBSD__
  +#include <stdlib.h>
   #else
   #include <malloc.h>
   #endif
   ---
 - Bump PORTREVISON

graphics/birdfont/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	birdfont
 DISTVERSION=	2.32.3
+PORTREVISION=	1
 CATEGORIES=	graphics x11-fonts
 MASTER_SITES=	https://birdfont.org/releases/
 

graphics/birdfont/files/patch-libbirdgems_fit__cubic.c

@@ -1,11 +0,0 @@
---- libbirdgems/fit_cubic.c.orig	2020-02-29 17:58:28 UTC
-+++ libbirdgems/fit_cubic.c
-@@ -24,6 +24,8 @@ Adapted to BirdFont by Johan Mattsson 2015
- 
- #ifdef MAC
- #include <malloc/malloc.h>
-+#elif __FreeBSD__
-+#include <stdlib.h>
- #else
- #include <malloc.h>
- #endif