Remove redundant `begin` block in SnapshotWorker
Remove redundant `begin` block in SnapshotWorker

As pointed out by rubocop, this `begin` block is redundant. Removing it
to simplify.

Change-Id: I4ad6e81daa844ad33ac57bcbae993b51848dc447

kalw/diffux,kalw/diffux,kalw/diffux,diffux/diffux,diffux/diffux,diffux/diffux