octeon_ep_vf: Remove octep_vf_wq

octeon_ep_vf: Remove octep_vf_wq

commit cb7dd712189f ("octeon_ep_vf: Add driver framework and device
initialization") added octep_vf_wq but it has never been used. Remove it.

Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Closes: https://lore.kernel.org/netdev/Z70bEoTKyeBau52q@gallifrey/
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://patch.msgid.link/20250414-octeon-wq-v1-1-23700e4bd208@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>