DeckLink disp.: set LowLatency opt in a usual way

Do not link bmdDeckLinkConfigLowLatencyVideoOutput with `-d decklink:low_latency`
option because these features are not necessarily related - the BMD
feature (according to the docs) is even not honored by recent devices
and doesn't have an impact on our "low_latency" (scheduled/not
scheduled) mode of operating.

src/video_display/decklink.cpp

@@ -352,6 +352,7 @@ struct state_decklink {
                 { bmdDeckLinkConfigVideoOutputIdleOperation, bmd_option{(int64_t) bmdIdleVideoOutputLastFrame, false} },
                 { bmdDeckLinkConfigOutput1080pAsPsF, bmd_option{false, false}},
                 { bmdDeckLinkConfigFieldFlickerRemoval, bmd_option{false, false}}, ///< required for interlaced video in low-latency
+                { bmdDeckLinkConfigLowLatencyVideoOutput, bmd_option{true, false}}
         };
         HDRMetadata         requested_hdr_mode{};
 
@@ -1244,10 +1245,6 @@ static void *display_decklink_init(struct module *parent, const char *fmt, unsig
                         }
                 }
 
-                if (!bmd_option(s->low_latency).option_write(deckLinkConfiguration, bmdDeckLinkConfigLowLatencyVideoOutput)) {
-                        goto error;
-                }
-
                 if (s->sdi_dual_channel_level != BMD_OPT_DEFAULT) {
                         if (deckLinkAttributes) {
                                 BMD_BOOL supports_level_a;