drm/amd/display: Drop legacy code

Signed-off-by: Rodrigo Siqueira <[e-mail]>
Acked-by: Roman Li <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dc_dp_types.h

···
 	uint8_t usb4_topology_id[DPCD_USB4_TOPOLOGY_ID_LEN];
 };
 
-#ifndef DP_DFP_CAPABILITY_EXTENSION_SUPPORT
-#define DP_DFP_CAPABILITY_EXTENSION_SUPPORT		0x0A3
-#endif
-#ifndef DP_TEST_264BIT_CUSTOM_PATTERN_7_0
-#define DP_TEST_264BIT_CUSTOM_PATTERN_7_0		0X2230
-#endif
-#ifndef DP_TEST_264BIT_CUSTOM_PATTERN_263_256
-#define DP_TEST_264BIT_CUSTOM_PATTERN_263_256		0X2250
-#endif
-
 union dp_main_line_channel_coding_cap {
 	struct {
 		uint8_t DP_8b_10b_SUPPORTED	:1;

drivers/gpu/drm/amd/display/dc/gpio/dcn21/hw_translate_dcn21.c

···
 			return true;
 		default:
 			ASSERT_CRITICAL(false);
-#ifdef PALLADIUM_SUPPORTED
-		*en = GPIO_DDC_LINE_DDC1;
-		return true;
-#endif
 			return false;
 		}
 	break;
···
 	/* UNEXPECTED */
 	default:
 /*	case REG(DC_GPIO_SYNCA_A): not exista */
-#ifdef PALLADIUM_SUPPORTED
-		*id = GPIO_ID_HPD;
-		*en = GPIO_DDC_LINE_DDC1;
-		return true;
-#endif
 		ASSERT_CRITICAL(false);
 		return false;
 	}
···
 		break;
 		default:
 			ASSERT_CRITICAL(false);
-#ifdef PALLADIUM_SUPPORTED
-			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD1_A_MASK;
-			result = true;
-#endif
 			result = false;
 		}
 	break;