build: db_test does not use dlopen/dlsym.. remove LIBRARY_DL from deps
diff --git a/openbsc/tests/db/Makefile.am b/openbsc/tests/db/Makefile.am
index e24cc90..26ea703 100644
--- a/openbsc/tests/db/Makefile.am
+++ b/openbsc/tests/db/Makefile.am
@@ -13,5 +13,5 @@
 		$(top_builddir)/src/libtrau/libtrau.a \
 		$(top_builddir)/src/libcommon/libcommon.a \
 		$(LIBOSMOCORE_LIBS) $(LIBOSMOABIS_LIBS) \
-		$(LIBOSMOGSM_LIBS) $(LIBSMPP34_LIBS) $(LIBOSMOVTY_LIBS) $(LIBRARY_DL) -ldbi
+		$(LIBOSMOGSM_LIBS) $(LIBSMPP34_LIBS) $(LIBOSMOVTY_LIBS) -ldbi