errcheck, instancetype: Remove pkg/instancetype from exclude_files
pkg/instancetype currently builds successfully without any errcheck
errors and so can be removed from exclude_files.
"pkg/hotplug-disk/": "KubeVirt hotplug-disk pkg does not pass errcheck yet",
"pkg/ignition/": "KubeVirt ignition pkg does not pass errcheck yet",
"pkg/inotify-informer/": "KubeVirt inotify-informer pkg does not pass errcheck yet",
- "pkg/instancetype/": "KubeVirt instancetype pkg does not pass errcheck yet",
"pkg/monitoring/": "KubeVirt monitoring pkg does not pass errcheck yet",
"pkg/os/": "KubeVirt os pkg does not pass errcheck yet",
"pkg/rest/": "KubeVirt rest pkg does not pass errcheck yet",
