drm/amd/display: Remove set but not unused variable 'stream_status'

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hw_sequencer.c:
 In function dcn10_post_unlock_program_front_end:
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hw_sequencer.c:2623:29:
 warning: variable stream_status set but not used [-Wunused-but-set-variable]

commit bbf5f6c3 ("drm/amd/display: Split program front end part that occur outside lock")
involved this unused variable.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -2614,7 +2614,7 @@ void dcn10_post_unlock_program_front_end(
 		struct dc *dc,
 		struct dc_state *context)
 {
-	int i, j;
+	int i;
 
 	DC_LOGGER_INIT(dc->ctx->logger);
 
@@ -2624,14 +2624,8 @@ void dcn10_post_unlock_program_front_end(
 		if (!pipe_ctx->top_pipe &&
 			!pipe_ctx->prev_odm_pipe &&
 			pipe_ctx->stream) {
-			struct dc_stream_status *stream_status = NULL;
 			struct timing_generator *tg = pipe_ctx->stream_res.tg;
 
-			for (j = 0; j < context->stream_count; j++) {
-				if (pipe_ctx->stream == context->streams[j])
-					stream_status = &context->stream_status[j];
-			}
-
 			if (context->stream_status[i].plane_count == 0)
 				false_optc_underflow_wa(dc, pipe_ctx->stream, tg);
 		}