Error should be 409 as the container is different state to remove

Closes #9569

Signed-off-by: Srini Brahmaroutu <srbrahma@us.ibm.com>
registry: remove accidentally added --insecure-registry feature

If `--insecure-registry mydomain.com` was specified, it would match a registry at mydomain.com on any port.
This was accidentally added in #9735 and is now being reverted.

Signed-off-by: Tibor Vass <teabee89@gmail.com>
Merge pull request #9583 from brahmaroutu/remove_container_9569

Error should be 409 as the container is different state to remove
Merge pull request #9754 from tiborvass/remove-insecure-registry-all-ports

registry: remove accidentally added --insecure-registry feature
api/server: commenting proppy from maintainer

Signed-off-by: Johan Euphrosine <proppy@google.com>
Merge pull request #9791 from proppy/break

api/server: commenting proppy from maintainer