drm/vc4: hdmi: Remove unused struct

Commitc7d30623 ("drm/vc4: hdmi: Remove unused struct") removed the
references to the vc4_hdmi_audio_widgets and vc4_hdmi_audio_routes
structures, but not the structures themselves resulting in two warnings.
Remove it.

Fixes: c7d30623 ("drm/vc4: hdmi: Remove unused struct")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210819140753.930751-1-maxime@cerno.techSigned-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -1395,14 +1395,6 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data,
 	return 0;
 }
 
-static const struct snd_soc_dapm_widget vc4_hdmi_audio_widgets[] = {
-	SND_SOC_DAPM_OUTPUT("TX"),
-};
-
-static const struct snd_soc_dapm_route vc4_hdmi_audio_routes[] = {
-	{ "TX", NULL, "Playback" },
-};
-
 static const struct snd_soc_component_driver vc4_hdmi_audio_cpu_dai_comp = {
 	.name = "vc4-hdmi-cpu-dai-component",
 };