Remove unused StateController.previousName
Remove unused StateController.previousName

Change-type: patch

resin-io/resin-etcher,resin-io/resin-etcher,resin-io/etcher,resin-io/herostratus,resin-io/herostratus,resin-io/etcher,resin-io/etcher,resin-io/etcher,resin-io/etcher