busybox: delete redundant patch

This problem has been fixed in upstream commit
6b6a3d9339f1c08efaa18a7fb7357e20b48bdc95. This patch now (harmlessly)
adds the same definition a second time.

Signed-off-by: Magnus Kroken <mkroken@gmail.com>
[bump PKG_RELEASE]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
(cherry picked from commit 4165232c45)

package/utils/busybox/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=busybox
 PKG_VERSION:=1.30.1
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 PKG_FLAGS:=essential
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

package/utils/busybox/patches/130-mconf_missing_sigwinch.patch

@@ -1,13 +0,0 @@
---- a/scripts/kconfig/mconf.c
-+++ b/scripts/kconfig/mconf.c
-@@ -31,6 +31,10 @@
- #define SIGWINCH 28
- #endif
- 
-+#ifndef SIGWINCH
-+#define SIGWINCH 28
-+#endif
-+
- #define LKC_DIRECT_LINK
- #include "lkc.h"
-