drm/i915/gvt: fix dead locking in early workload shadow
As early workload scan and shadow happens in execlist mmio handler,
which has already taken vgpu_lock. So remove extra lock taking here.
Fixes: 952f89f098c7 ("drm/i915/gvt: Wean off struct_mutex") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>