Remove unused patch

Ncurses does not reference this patch since r32728.

svn path=/nixpkgs/branches/stdenv-updates/; revision=32793

pkgs/development/libraries/ncurses/wint_t.patch

@@ -1,14 +0,0 @@
-http://www.mail-archive.com/freewrt-developers@freewrt.org/msg01326.html
---- ncurses-5.6.orig/ncurses/curses.priv.h     2006-12-10 01:55:14.000000000 0100
-+++ ncurses-5.6/ncurses/curses.priv.h  2008-02-11 13:12:04.000000000 +0100
-@@ -253,6 +253,10 @@ color_t;
- #include <term_entry.h>
- #include <nc_tparm.h>
-
-+#ifndef _WINT_T
-+#include <wchar.h>
-+#endif
-+
- #if NCURSES_EXT_COLORS && USE_WIDEC_SUPPORT
- #define if_EXT_COLORS(stmt)   stmt
- #define NetPair(value,p)      (value).ext_color = (p), \