drm/amd/display: drop unused function set_abm_event()

set_abm_event() is never actually used. So, drop it.

Fixes: b8fe56375f78 ("drm/amd/display: Refactor ABM feature")
Reported-by: kernel test robot <[e-mail]>
Reported-by: Tom Rix <[e-mail]>
Reviewed-by: Rodrigo Siqueira <[e-mail]>
Signed-off-by: Hamza Mahfooz <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c

···
 	return ret;
 }
 
-static bool dmub_abm_set_event_ex(struct abm *abm, unsigned int full_screen, unsigned int video_mode,
-		unsigned int hdr_mode, unsigned int panel_inst)
-{
-	bool ret = false;
-	unsigned int feature_support;
-
-	feature_support = abm_feature_support(abm, panel_inst);
-
-	return ret;
-}
-
 static bool dmub_abm_set_backlight_level_pwm_ex(struct abm *abm,
 		unsigned int backlight_pwm_u16_16,
 		unsigned int frame_ramp,
···
 	.init_abm_config = dmub_abm_init_config_ex,
 	.set_abm_pause = dmub_abm_set_pause_ex,
 	.set_pipe_ex = dmub_abm_set_pipe_ex,
-	.set_abm_event = dmub_abm_set_event_ex,
 	.set_backlight_level_pwm = dmub_abm_set_backlight_level_pwm_ex,
 };
 

drivers/gpu/drm/amd/display/dc/inc/hw/abm.h

···
 			unsigned int otg_inst,
 			unsigned int option,
 			unsigned int panel_inst);
-	bool (*set_abm_event)(struct abm *abm, unsigned int full_screen, unsigned int video_mode,
-			unsigned int hdr_mode, unsigned int panel_inst);
 };
 
 #endif