Revert "asterisk: link in libdl when linking to liblua"

This reverts commit 150b85ab35.

OpenWrt upstream updated the lua package so that liblua now is linked
to libdl.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

net/asterisk/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=asterisk
 PKG_VERSION:=18.1.1
-PKG_RELEASE:=2
+PKG_RELEASE:=1
 
 PKG_SOURCE:=asterisk-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.asterisk.org/pub/telephony/asterisk/releases

net/asterisk/patches/150-lua-ldl.patch

@@ -1,11 +0,0 @@
---- a/configure.ac
-+++ b/configure.ac
-@@ -2581,7 +2581,7 @@ for ver in ; do
- done
- 
- # Some distributions (like openSUSE and NetBSD) remove the 5.x suffix.
--AST_EXT_LIB_CHECK([LUA], [lua], [luaL_newstate], [lua.h], [-lm])
-+AST_EXT_LIB_CHECK([LUA], [lua], [luaL_newstate], [lua.h], [-lm -ldl])
- 
- # Accept either RADIUS client library, their APIs are fully compatible,
- # just different header filenames and different SONAMEs