net: liquidio: Remove unused struct lio_trusted_vf_ctx

After commit 6870957e("liquidio: make soft command calls synchronous"), no
one use struct lio_trusted_vf_ctx, so remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20220927133940.104181-1-yuancan@huawei.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>