switch mod_enum to use new portable in-tree version

src/mod/applications/mod_enum/Makefile

-# LDNS=ldns-1.6.9
-# BASE=../../../..
-
-# LDNS_DIR=$(switch_srcdir)/libs/$(LDNS)
-# LDNS_BUILDDIR=$(switch_builddir)/libs/$(LDNS)
-# LDNSLA=$(LDNS_BUILDDIR)/libldns.la
-
-# include $(BASE)/build/modmake.rules
-# LOCAL_LIBADD=$(LDNSLA)
-
-
 BASE=../../../..
 
-LDNS=ldns-1.6.9
+LDNS=ldns
 
 LDNS_DIR=$(switch_srcdir)/libs/$(LDNS)
 LDNS_BUILDDIR=$(switch_builddir)/libs/$(LDNS)
@@ -20,11 +9,6 @@ LDNS_LA=$(LDNS_BUILDDIR)/libldns.la
 LOCAL_LIBADD=$(LDNS_LA)
 include $(BASE)/build/modmake.rules
 
-$(LDNS_DIR)/Makefile.in:
-	$(GETLIB) $(LDNS).tar.gz
-	cp ldns.diff $(LDNS_BUILDDIR)
-	cd $(LDNS_BUILDDIR) && patch -p1 -i ldns.diff
-
 $(LDNS_BUILDDIR)/Makefile: $(LDNS_DIR)/Makefile.in
 	mkdir -p $(LDNS_BUILDDIR)
 	cd $(LDNS_BUILDDIR) && $(DEFAULT_VARS) $(LDNS_DIR)/configure $(DEFAULT_ARGS) --srcdir=$(LDNS_DIR) --disable-gost --without-ssl --disable-sha2