security: remove dead vsock code from KTD LSM.

Previously, the KTD LSM communicated out over a virtio vsock.
We have switched to communicating out over a pipe to userland
exclusively, though, so this change removes the vsock-related code.

BUG=b/161889712
SOURCE=KTD

Signed-off-by: John Davis <kyuzo@google.com>
Change-Id: I875a2a4ee40a38d84f99cffe8b07906d637f0cf1
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/21571
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
8 files changed