drm/amd/display: Remove unused defines

[Why]
Defines aren't used. Remove them.
Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -60,9 +60,6 @@ static bool dmub_psr_set_version(struct dmub_psr *dmub, struct dc_stream_state *
 		return false;
 	else if (stream->psr_version == 0x1)
 		cmd.psr_set_version.psr_set_version_data.version = PSR_VERSION_1;
-	else if (stream->psr_version == 0x2)
-		cmd.psr_set_version.psr_set_version_data.version = PSR_VERSION_2;
-
 	cmd.psr_enable.header.payload_bytes = sizeof(struct dmub_cmd_psr_set_version_data);
 
 	dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd.psr_enable.header);

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd_dal.h

@@ -32,17 +32,15 @@
  */
 
 enum dmub_cmd_psr_type {
-	DMUB_CMD__PSR_SET_VERSION	= 0,
-	DMUB_CMD__PSR_COPY_SETTINGS	= 1,
-	DMUB_CMD__PSR_ENABLE		= 2,
-	DMUB_CMD__PSR_DISABLE		= 3,
-	DMUB_CMD__PSR_SET_LEVEL		= 4,
+	DMUB_CMD__PSR_SET_VERSION		= 0,
+	DMUB_CMD__PSR_COPY_SETTINGS		= 1,
+	DMUB_CMD__PSR_ENABLE			= 2,
+	DMUB_CMD__PSR_DISABLE			= 3,
+	DMUB_CMD__PSR_SET_LEVEL			= 4,
 };
 
 enum psr_version {
-	PSR_VERSION_1			= 0x10, // PSR Version 1
-	PSR_VERSION_2			= 0x20, // PSR Version 2, includes selective update
-	PSR_VERSION_2_1			= 0x21, // PSR Version 2, includes Y-coordinate support for SU
+	PSR_VERSION_1				= 0,
 };
 
 enum dmub_cmd_abm_type {