Use TrapsNeverHappen mode in more places in Vacuum (#4117)

We had already replaced the check on drop, but we can also
use that mode on all the other things there, as the pass never
does reorderings of things - it just removes them.

For example, the pass can now remove part of a dropped thing,

(drop (struct.get (foo)))
=>
(drop (foo))

In this example the struct.get can be removed, even if the foo
can't.

0 files changed, 0 insertions, 0 deletions