mm/damon/stat: deduplicate intervals_goal setup in damon_stat_build_ctx()

The damon_stat_build_ctx() function sets the values of intervals_goal
structure members. These values are applied to damon_ctx in
damon_set_attrs(). However, It is resetting the values that were already
applied previously to the same values. I suggest removing this code as it
constitutes duplicate execution.

Link: https://patch.msgid.link/[e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: JaeJoon Jung <[e-mail]>
Reviewed-by: Enze Li <[e-mail]>
Reviewed-by: SeongJae Park <[e-mail]>
Signed-off-by: SeongJae Park <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

mm/damon/stat.c

···
 	if (damon_set_attrs(ctx, &attrs))
 		goto free_out;
 
-	/*
-	 * auto-tune sampling and aggregation interval aiming 4% DAMON-observed
-	 * accesses ratio, keeping sampling interval in [5ms, 10s] range.
-	 */
-	ctx->attrs.intervals_goal = (struct damon_intervals_goal) {
-		.access_bp = 400, .aggrs = 3,
-		.min_sample_us = 5000, .max_sample_us = 10000000,
-	};
 	if (damon_select_ops(ctx, DAMON_OPS_PADDR))
 		goto free_out;