ccache: patch not required anymore

packages/ccache/snprintf.c.patch

@@ -1,13 +0,0 @@
---- ./snprintf.c	2017-02-18 02:58:53.000000000 +0530
-+++ ../snprintf.c	2017-02-20 09:50:46.779420391 +0530
-@@ -539,10 +539,6 @@
- static UINTMAX_T myround(LDOUBLE);
- static LDOUBLE mypow10(int);
- 
--#ifndef __MINGW32__
--extern int errno;
--#endif
--
- int
- rpl_vsnprintf(char *str, size_t size, const char *format, va_list args)
- {