tests: fix the push_work_on_channel.vv output

vlib/v/tests/inout/push_work_on_channel.out

@@ -1,6 +1,5 @@
 > main start
 > work started
-> main ch.close called
 > work x: 0
 > work x: 1
 > work x: 2

vlib/v/tests/inout/push_work_on_channel.vv

@@ -22,7 +22,7 @@ fn main() {
 	_ := <-work_started
 
 	ch.close()
-	println('> main ch.close called')
+	// println('> main ch.close called') // the position of this is not deterministic
 
 	task.wait()
 	println('> main task was finished')