Removed the explicitly-set `DISPLAY` variable as described in the following [issue](https://github.com/tmux-plugins/tmux-continuum/issues/127)
Fixes being unable to copy to clipboard with `xclip` after suspending / unsuspending.
If the .config/systemd/user directory did not exist, it would not get
created, as the mkdir command was inside the function
systemd_unit_file() which is piped into the target file. The shell
determined that file could not be created first (as the directory did
not exist), so never called the function.
Signed-off-by: Paul Elliott <paul@niburu.org>
- this caused issues with the restore missing some processes and putting
others in the wrong place.
- I think this may need some work with the tmux-resurrect plugin to fix if auto
restore is to be used.