This removes everything related to workspaces, as well as the current
RandR configuration, creating a (cleaner) slate for switching to tabs.
This was supposed to be committed earlier, but got broken by
clbot (see b/333).
Change-Id: I2d110bca0d6629a505699210f0aba12882f83d48
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10115
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI