Drop use of log_set_print_filename() API inside libosmocore

Let's use log_set_print_filename2() API instead, which has less ackward
behavior implications like changing the print status of category-hex.

Related: OS#5034
Change-Id: Ifc78e1dcba5baf0b41f6ccbbbd1e3f06552d73da
diff --git a/tests/oap/oap_client_test.c b/tests/oap/oap_client_test.c
index 0ac32ea..622912f 100644
--- a/tests/oap/oap_client_test.c
+++ b/tests/oap/oap_client_test.c
@@ -260,7 +260,7 @@
 	OSMO_ASSERT(osmo_stderr_target);
 	log_set_use_color(osmo_stderr_target, 0);
 	log_set_print_timestamp(osmo_stderr_target, 0);
-	log_set_print_filename(osmo_stderr_target, 0);
+	log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE);
 	log_set_print_category_hex(osmo_stderr_target, 0);
 	log_set_print_category(osmo_stderr_target, 1);
 	log_parse_category_mask(osmo_stderr_target, "DLOAP,1");