time: consolidate the different sleep functions into time.wait(Duration) (#8853)

vlib/sync/channel_select_2_test.v

@@ -1,4 +1,3 @@
-import sync
 import time
 
 fn do_rec_i64(ch chan i64) {
@@ -57,9 +56,7 @@ fn test_select() {
 	}
 	// Use Gauß' formula for the first 2 contributions
 	// the 3rd contribution is `byte` and must be seen modulo 256
-	expected_sum :=  2 * (300 * (300 - 1) / 2) +
-		256 * (256 - 1) / 2 +
-		44 * (44 - 1) / 2
+	expected_sum := 2 * (300 * (300 - 1) / 2) + 256 * (256 - 1) / 2 + 44 * (44 - 1) / 2
 	assert sum == expected_sum
-	time.sleep_ms(20) // to give assert in coroutine enough time
+	time.wait(20 * time.millisecond) // to give assert in coroutine enough time
 }

vlib/sync/pool/pool_test.v

@@ -12,14 +12,14 @@ pub struct IResult {
 fn worker_s(p &pool.PoolProcessor, idx int, worker_id int) &SResult {
 	item := p.get_item<string>(idx)
 	println('worker_s worker_id: $worker_id | idx: $idx | item: $item')
-	time.sleep_ms(3)
+	time.wait(3 * time.millisecond)
 	return &SResult{'$item $item'}
 }
 
 fn worker_i(p &pool.PoolProcessor, idx int, worker_id int) &IResult {
 	item := p.get_item<int>(idx)
 	println('worker_i worker_id: $worker_id | idx: $idx | item: $item')
-	time.sleep_ms(5)
+	time.wait(5 * time.millisecond)
 	return &IResult{item * 1000}
 }