drm/amd/display: Clean up dp_blank functions

[Why]
Unused variable "refresh" and incorrect comment formatting

[How]
Remove variable, reindent comments
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -908,7 +908,6 @@ static void dce110_stream_encoder_dp_blank(
 	struct stream_encoder *enc)
 {
 	struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc);
-	uint32_t retries = 0;
 	uint32_t  reg1 = 0;
 	uint32_t max_retries = DP_BLANK_MAX_RETRY * 10;
 
@@ -943,8 +942,6 @@ static void dce110_stream_encoder_dp_blank(
 			0,
 			10, max_retries);
 
-	ASSERT(retries <= max_retries);
-
 	/* Tell the DP encoder to ignore timing from CRTC, must be done after
 	 * the polling. If we set DP_STEER_FIFO_RESET before DP stream blank is
 	 * complete, stream status will be stuck in video stream enabled state,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c

@@ -766,7 +766,6 @@ void enc1_stream_encoder_dp_blank(
 	struct stream_encoder *enc)
 {
 	struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
-	uint32_t retries = 0;
 	uint32_t  reg1 = 0;
 	uint32_t max_retries = DP_BLANK_MAX_RETRY * 10;
 
@@ -803,8 +802,6 @@ void enc1_stream_encoder_dp_blank(
 			0,
 			10, max_retries);
 
-	ASSERT(retries <= max_retries);
-
 	/* Tell the DP encoder to ignore timing from CRTC, must be done after
 	 * the polling. If we set DP_STEER_FIFO_RESET before DP stream blank is
 	 * complete, stream status will be stuck in video stream enabled state,