RDMA/rtrs-clt: Remove outdated comment in create_con_cq_qp

As run destroy_con_cq_qp many times doesn't work, remove the comments.

Fixes: 6a98d71d

 ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20201023074353.21946-3-jinpu.wang@cloud.ionos.com
Suggested-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>