Remove console line before printing debugging and on exit

src/test/dummy.c

@@ -0,0 +1,8 @@
+void call_rx_audio() { }
+void call_out_setup() { }
+void call_out_release() { }
+void call_out_disconnect() { }
+void print_help() { }
+void sender_send() { }
+void sender_receive() { }
+