sys-apps/prctl: remove unused patch

Closes: https://github.com/gentoo/gentoo/pull/16417
Package-Manager: Portage-2.3.101, Repoman-2.3.22
Signed-off-by: Michael Mair-Keimberger <m.mairkeimberger@gmail.com>
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

sys-apps/prctl/files/prctl-1.6-configure.in.patch

@@ -1,20 +0,0 @@
-Restored configure.in based on tarball's configure
---- /dev/null
-+++ b/configure.in
-@@ -0,0 +1,16 @@
-+AC_INIT(prctl.c)
-+
-+AC_PROG_LN_S
-+AC_PROG_CC
-+AC_PROG_CPP
-+AC_PROG_INSTALL
-+
-+
-+AC_HEADER_STDC
-+AC_CHECK_HEADERS(unistd.h)
-+
-+
-+AC_CHECK_FUNCS(strerror)
-+AC_SUBST(ASCPP)
-+AC_SUBST(INSTALL)
-+AC_OUTPUT(Makefile)