Delete go/delivery: moved whole to mesh-delivery's SDK and joined; the package list, notInSDK, untilTheJoin and seat-names follow (S-7, ADR 0634 §5; issue 1966)

Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i

go/testdata/seat-names.txt

@@ -28,15 +28,6 @@ catalogue/seat_dependencies.go: node-package-manager
 catalogue/seat_dependencies.go: node-service-manager
 catalogue/shares.go: node-mounts
 catalogue/shares.go: node-nfs-server
-delivery/builder.go: container-image-registry
-delivery/builder.go: oci-artifact-registry
-delivery/checker.go: mesh-delivery-checker
-delivery/composed.go: mesh-provisioner
-delivery/held.go: mesh.seat.mesh-artifact-sweep.event.
-delivery/placement.go: mesh-self-check
-delivery/provided.go: the-private-network
-delivery/signers.go: mesh-vault
-delivery/stepasks.go: node-build-node
 health/findings.go: mesh-conditions
 health/findings.go: mesh-healers
 health/findings.go: mesh-self-check