mail-filter/rblcheck: remove unused patch

Signed-off-by: Michael Mair-Keimberger <mm1ke@gentoo.org>

mail-filter/rblcheck/files/rblcheck-1.5-configure.patch

@@ -1,20 +0,0 @@
---- rblcheck-1.5/configure	2005-07-01 10:50:36.000000000 +0100
-+++ rblcheck-1.5/configure	2005-07-01 10:57:05.000000000 +0100
-@@ -1529,13 +1529,12 @@
- cat > conftest.$ac_ext <<EOF
- #line 1531 "configure"
- #include "confdefs.h"
--/* Override any gcc2 internal prototype to avoid an error.  */
--/* We use char because int might match the return type of a gcc2
--    builtin and then its argument prototype would still apply.  */
--char res_query();
-+
-+/* Include <resolv.h> to get macro definition for res_query */
-+#include <resolv.h>
- 
- int main() {
--res_query()
-+res_query("",0,0,"",0)
- ; return 0; }
- EOF
- if { (eval echo configure:1542: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then