Respect quiet flag when printing Metal API warning

Fixes https://github.com/hashcat/hashcat/issues/3624

src/backend.c

@@ -6230,7 +6230,7 @@ int backend_ctx_devices_init (hashcat_ctx_t *hashcat_ctx, const int comptime)
       {
         if (backend_ctx->backend_devices_filter == -1ULL)
         {
-          if (user_options->backend_info == 0)
+          if ((user_options->quiet == false) && (user_options->backend_info == 0))
           {
             event_log_warning (hashcat_ctx, "The device #%d has been disabled as it most likely also exists as an OpenCL device, but it is not possible to automatically map it.", device_id + 1);
             event_log_warning (hashcat_ctx, "You can use -d %d to use Metal API instead of OpenCL API. In some rare cases this is more stable.", device_id + 1);