fetch-supervisor.sh: Obsolete so remove
fetch-supervisor.sh: Obsolete so remove

Signed-off-by: Theodor Gherzan <be3f40ffe21d83aefcbc279c996fd6bca5445244@resin.io>

resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin